# CVE-2026-33603: dovecot23: This update for dovecot23 fixes the following issues:  - CVE-2024-23184: parsing of messages containing many address...

CVE-2026-33603 is fixed in 19 products on 1 platform, first by dovecot-auth-lua 1:2.3.16+dfsg1-3ubuntu2.9, released May 12, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-33603
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 12, 2026

## Description

This update for dovecot23 fixes the following issues:  - CVE-2024-23184: parsing of messages containing many address headers (From, To, Cc, Bcc, etc.) could be excessively CPU   intensive (bsc#1229184). - CVE-2024-23185: large headers can cause resource exhaustion when parsing message (bsc#1229183). - CVE-2025-59028: Invalid base64 authentication can cause DoS for other logins (bsc#1260894). - CVE-2025-59031: decode2text.sh OOXML extraction may follow symlinks and read unintended files during indexing   (bsc#1260895). - CVE-2025-59032: pigeonhole: ManageSieve panic occurs with sieve-connect as a client (bsc#1260902). - CVE-2026-27852: DoS by sending mail with bad header (bsc#1276799). - CVE-2026-27855: OTP driver vulnerable to replay attack (bsc#1260900). - CVE-2026-27856: Doveadm credentials were not checked using timing-safe checking function (bsc#1260899). - CVE-2026-27857: sending excessive parenthesis causes imap-login to use excessive memory (bsc#1260898). - CVE-2026-27858: pigeonhole: managesieve-login can allocate large amount of memory during authentication (bsc#1260901). - CVE-2026-27859: excessive RFC 2231 MIME parameters in email would can excessive CPU usage (bsc#1260897). - CVE-2026-33263: submission-login: Panic when mail_max_userip_connections is reached (bsc#1276794). - CVE-2026-33603: login: base64 input can contain tabs that bypass IPC protection (bsc#1265147). - CVE-2026-33604: SMTP Smuggling via Missing Dot-Stuffing (bsc#1276802). - CVE-2026-33605: managesieve-login: Pre-auth crash (bsc#1276809). - CVE-2026-33606: dsync: Mail content can cause dsync protocol injection (bsc#1276800). - CVE-2026-33607: IMAP LIST match_sub() Exponential Backtracking -- CPU Denial of Service (bsc#1276795). - CVE-2026-40014: CPU DoS via Crafted References Header (bsc#1276804). - CVE-2026-40015: imap-hibernate can be crashed (bsc#1276812). - CVE-2026-40016: Sieve :contains/:matches O(NxM) substring match bypasses sieve_max_cpu_time limit (bsc#1265148). - CVE-2026-40019: managesieve-login pre-auth infinite loop (bsc#1276811). - CVE-2026-40020: IMAP folders can be shared-spammed to everyone (bsc#1265149). - CVE-2026-40203: IMAP Compression Can Reveal Whether a Small Synced Email Body Matches Sender-Chosen Text   (bsc#1276815). - CVE-2026-40205: OAuth2 passdb scope enforcement bypass via OR semantics in remote validation path (bsc#1276820). - CVE-2026-42006: imap-login: uncontrolled memory usage with excessive bracing over IMAP (bsc#1265150). - CVE-2026-42007: editheader RCE (bsc#1276817). - CVE-2026-42008: XCLIENT FORWARD= bare token not namespaced (bsc#1276824). - CVE-2026-42391: imap: Pre-login memory/CPU growth with ID command (bsc#1276835). - CVE-2026-42393: doveadm_password or api key length can still be leaked with timing comparisons (bsc#1276827). - CVE-2026-42395: Single NUL-Byte XCLIENT FORWARD Payload Crashes (bsc#1276826). - CVE-2026-52681: Sieve resource usage tracking lost when active script changes (bsc#1276828). - CVE-2026-52687: IMAP: COMPRESS ZSTD can cause excessive memory usage (bsc#1276837). - CVE-2026-73208: auth: db-oauth2: aud claim used as fallback for missing scope claim (bsc#1276830). - CVE-2026-73209: imap-login crash: Self-recursion on zero-output decompress chunks (bsc#1276833).  Changes for dovecot23:  - Update to version 2.3.21.1.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | dovecot Debian 12.15 (bookworm) | 1:2.3.19.1+dfsg1-2.1+deb12u6 | [DEBIAN-CVE-2026-33603](https://patchblox.com/security/data/fix/linux/debian-cve-2026-33603.md) | May 27, 2026 |
| Linux | dovecot Debian 13.5 (trixie) | 1:2.4.1+dfsg1-6+deb13u6 | [DEBIAN-CVE-2026-33603](https://patchblox.com/security/data/fix/linux/debian-cve-2026-33603.md) | May 27, 2026 |
| Linux | dovecot Debian 14 | 1:2.4.4+dfsg1-1 | [DEBIAN-CVE-2026-33603](https://patchblox.com/security/data/fix/linux/debian-cve-2026-33603.md) | May 27, 2026 |
| Linux | dovecot-auth-lua Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-auth-lua 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-auth-lua-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-auth-lua Ubuntu 24.04.5 LTS (noble) | 1:2.3.21+dfsg1-2ubuntu6.5 | [dovecot-auth-lua 1:2.3.21+dfsg1-2ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dovecot-auth-lua-1-2.3.21-dfsg1-2ubuntu6.5.md) | May 12, 2026 |
| Linux | dovecot-auth-lua Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-auth-lua 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-auth-lua-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-auth-lua Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-auth-lua 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-auth-lua-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot-core Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-core 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-core-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-core Ubuntu 24.04.5 LTS (noble) | 1:2.3.21+dfsg1-2ubuntu6.5 | [dovecot-core 1:2.3.21+dfsg1-2ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dovecot-core-1-2.3.21-dfsg1-2ubuntu6.5.md) | May 12, 2026 |
| Linux | dovecot-core Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-core 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-core-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-core Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-core 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-core-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot-flatcurve Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-flatcurve 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-flatcurve-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-flatcurve Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-flatcurve 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-flatcurve-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot-gssapi Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-gssapi 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-gssapi-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-gssapi Ubuntu 24.04.5 LTS (noble) | 1:2.3.21+dfsg1-2ubuntu6.5 | [dovecot-gssapi 1:2.3.21+dfsg1-2ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dovecot-gssapi-1-2.3.21-dfsg1-2ubuntu6.5.md) | May 12, 2026 |
| Linux | dovecot-gssapi Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-gssapi 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-gssapi-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-gssapi Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-gssapi 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-gssapi-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot-imapd Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-imapd 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-imapd-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-imapd Ubuntu 24.04.5 LTS (noble) | 1:2.3.21+dfsg1-2ubuntu6.5 | [dovecot-imapd 1:2.3.21+dfsg1-2ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dovecot-imapd-1-2.3.21-dfsg1-2ubuntu6.5.md) | May 12, 2026 |
| Linux | dovecot-imapd Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-imapd 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-imapd-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-imapd Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-imapd 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-imapd-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot-ldap Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-ldap 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-ldap-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-ldap Ubuntu 24.04.5 LTS (noble) | 1:2.3.21+dfsg1-2ubuntu6.5 | [dovecot-ldap 1:2.3.21+dfsg1-2ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dovecot-ldap-1-2.3.21-dfsg1-2ubuntu6.5.md) | May 12, 2026 |
| Linux | dovecot-ldap Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-ldap 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-ldap-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-ldap Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-ldap 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-ldap-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot-lmtpd Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-lmtpd 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-lmtpd-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-lmtpd Ubuntu 24.04.5 LTS (noble) | 1:2.3.21+dfsg1-2ubuntu6.5 | [dovecot-lmtpd 1:2.3.21+dfsg1-2ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dovecot-lmtpd-1-2.3.21-dfsg1-2ubuntu6.5.md) | May 12, 2026 |
| Linux | dovecot-lmtpd Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-lmtpd 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-lmtpd-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-lmtpd Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-lmtpd 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-lmtpd-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot-lucene Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-lucene 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-lucene-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-managesieved Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-managesieved 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-managesieved-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-managesieved Ubuntu 24.04.5 LTS (noble) | 1:2.3.21+dfsg1-2ubuntu6.5 | [dovecot-managesieved 1:2.3.21+dfsg1-2ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dovecot-managesieved-1-2.3.21-dfsg1-2ubuntu6.5.md) | May 12, 2026 |
| Linux | dovecot-managesieved Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-managesieved 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-managesieved-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-managesieved Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-managesieved 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-managesieved-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot-mysql Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-mysql 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-mysql-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-mysql Ubuntu 24.04.5 LTS (noble) | 1:2.3.21+dfsg1-2ubuntu6.5 | [dovecot-mysql 1:2.3.21+dfsg1-2ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dovecot-mysql-1-2.3.21-dfsg1-2ubuntu6.5.md) | May 12, 2026 |
| Linux | dovecot-mysql Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-mysql 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-mysql-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-mysql Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-mysql 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-mysql-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot-pgsql Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-pgsql 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-pgsql-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-pgsql Ubuntu 24.04.5 LTS (noble) | 1:2.3.21+dfsg1-2ubuntu6.5 | [dovecot-pgsql 1:2.3.21+dfsg1-2ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dovecot-pgsql-1-2.3.21-dfsg1-2ubuntu6.5.md) | May 12, 2026 |
| Linux | dovecot-pgsql Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-pgsql 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-pgsql-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-pgsql Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-pgsql 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-pgsql-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot-pop3d Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-pop3d 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-pop3d-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-pop3d Ubuntu 24.04.5 LTS (noble) | 1:2.3.21+dfsg1-2ubuntu6.5 | [dovecot-pop3d 1:2.3.21+dfsg1-2ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dovecot-pop3d-1-2.3.21-dfsg1-2ubuntu6.5.md) | May 12, 2026 |
| Linux | dovecot-pop3d Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-pop3d 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-pop3d-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-pop3d Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-pop3d 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-pop3d-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot-sieve Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-sieve 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-sieve-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-sieve Ubuntu 24.04.5 LTS (noble) | 1:2.3.21+dfsg1-2ubuntu6.5 | [dovecot-sieve 1:2.3.21+dfsg1-2ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dovecot-sieve-1-2.3.21-dfsg1-2ubuntu6.5.md) | May 12, 2026 |
| Linux | dovecot-sieve Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-sieve 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-sieve-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-sieve Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-sieve 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-sieve-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot-solr Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-solr 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-solr-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-solr Ubuntu 24.04.5 LTS (noble) | 1:2.3.21+dfsg1-2ubuntu6.5 | [dovecot-solr 1:2.3.21+dfsg1-2ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dovecot-solr-1-2.3.21-dfsg1-2ubuntu6.5.md) | May 12, 2026 |
| Linux | dovecot-solr Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-solr 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-solr-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-solr Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-solr 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-solr-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot-sqlite Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-sqlite 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-sqlite-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-sqlite Ubuntu 24.04.5 LTS (noble) | 1:2.3.21+dfsg1-2ubuntu6.5 | [dovecot-sqlite 1:2.3.21+dfsg1-2ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dovecot-sqlite-1-2.3.21-dfsg1-2ubuntu6.5.md) | May 12, 2026 |
| Linux | dovecot-sqlite Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-sqlite 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-sqlite-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-sqlite Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-sqlite 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-sqlite-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot-submissiond Ubuntu 22.04.1 LTS (jammy) | 1:2.3.16+dfsg1-3ubuntu2.9 | [dovecot-submissiond 1:2.3.16+dfsg1-3ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dovecot-submissiond-1-2.3.16-dfsg1-3ubuntu2.9.md) | May 12, 2026 |
| Linux | dovecot-submissiond Ubuntu 24.04.5 LTS (noble) | 1:2.3.21+dfsg1-2ubuntu6.5 | [dovecot-submissiond 1:2.3.21+dfsg1-2ubuntu6.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dovecot-submissiond-1-2.3.21-dfsg1-2ubuntu6.5.md) | May 12, 2026 |
| Linux | dovecot-submissiond Ubuntu 25.10 (questing) | 1:2.4.1+dfsg1-5ubuntu4.2 | [dovecot-submissiond 1:2.4.1+dfsg1-5ubuntu4.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dovecot-submissiond-1-2.4.1-dfsg1-5ubuntu4.2.md) | May 12, 2026 |
| Linux | dovecot-submissiond Ubuntu 26.04.1 LTS (resolute) | 1:2.4.2+dfsg1-3ubuntu2.1 | [dovecot-submissiond 1:2.4.2+dfsg1-3ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-dovecot-submissiond-1-2.4.2-dfsg1-3ubuntu2.1.md) | May 12, 2026 |
| Linux | dovecot23 sles 15.6 | 2.3.21.1-150200.76.1 | [SUSE-SU-2026:4139-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4139-1.md) | Sep 14, 2026 |
| Linux | dovecot23 sles 15.7 | 2.3.21.1-150200.76.1 | [SUSE-SU-2026:4139-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4139-1.md) | Sep 14, 2026 |
| Linux | dovecot24 opensuse-leap 16.0 | 2.4.4-160000.1.1 | [OPENSUSE-SU-2026:21109-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21109-1.md) | Jun 19, 2026 |
| Linux | dovecot24 sles 16.0 | 2.4.4-160000.1.1 | [SUSE-SU-2026:22185-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22185-1.md) | Jun 19, 2026 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

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