# ALAS2023-2026-3109: Security update for 10 packages

ALAS2023-2026-3109, released September 28, 2026, fixes 6 CVEs across 10 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/alas2023-2026-3109
- Platform: Linux
- Released: Sep 28, 2026
- Priority: High (Closes CVE-2026-42391, high severity)
- CVEs: 6, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://alas.aws.amazon.com/AL2023/ALAS-2026-3109.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [dovecot](https://patchblox.com/security/data/product/linux/dovecot.md) | amzn 2023 | 1:2.3.20-1.amzn2023.0.4 |
| [dovecot-debuginfo](https://patchblox.com/security/data/product/linux/dovecot-debuginfo.md) | amzn 2023 | 1:2.3.20-1.amzn2023.0.4 |
| [dovecot-debugsource](https://patchblox.com/security/data/product/linux/dovecot-debugsource.md) | amzn 2023 | 1:2.3.20-1.amzn2023.0.4 |
| [dovecot-devel](https://patchblox.com/security/data/product/linux/dovecot-devel.md) | amzn 2023 | 1:2.3.20-1.amzn2023.0.4 |
| [dovecot-mysql](https://patchblox.com/security/data/product/linux/dovecot-mysql.md) | amzn 2023 | 1:2.3.20-1.amzn2023.0.4 |
| [dovecot-mysql-debuginfo](https://patchblox.com/security/data/product/linux/dovecot-mysql-debuginfo.md) | amzn 2023 | 1:2.3.20-1.amzn2023.0.4 |
| [dovecot-pgsql](https://patchblox.com/security/data/product/linux/dovecot-pgsql.md) | amzn 2023 | 1:2.3.20-1.amzn2023.0.4 |
| [dovecot-pgsql-debuginfo](https://patchblox.com/security/data/product/linux/dovecot-pgsql-debuginfo.md) | amzn 2023 | 1:2.3.20-1.amzn2023.0.4 |
| [dovecot-pigeonhole](https://patchblox.com/security/data/product/linux/dovecot-pigeonhole.md) | amzn 2023 | 1:2.3.20-1.amzn2023.0.4 |
| [dovecot-pigeonhole-debuginfo](https://patchblox.com/security/data/product/linux/dovecot-pigeonhole-debuginfo.md) | amzn 2023 | 1:2.3.20-1.amzn2023.0.4 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-42391](https://patchblox.com/security/data/cve/CVE-2026-42391.md) | High | dovecot: An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before logging in, whi... | 9.1 | 0.0045 |  |
| [CVE-2026-27852](https://patchblox.com/security/data/cve/CVE-2026-27852.md) | High | dovecot: Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind | 9.1 | 0.0043 |  |
| [CVE-2026-42007](https://patchblox.com/security/data/cve/CVE-2026-42007.md) | High | dovecot: An attacker that has valid credentials can use a Sieve script with the editheader extension to trigger a use-after-fr... | 9.1 | 0.0035 |  |
| [CVE-2026-40018](https://patchblox.com/security/data/cve/CVE-2026-40018.md) | High | dovecot: None None None No publicly available exploits are known. | 9.1 | 0.0032 |  |
| [CVE-2026-73208](https://patchblox.com/security/data/cve/CVE-2026-73208.md) | High | dovecot: An attacker that holds a token intended for a different purpose can authenticate, because when an OAuth2 token respon... | 9.1 | 0.0031 |  |
| [CVE-2026-42008](https://patchblox.com/security/data/cve/CVE-2026-42008.md) | Routine | dovecot: Forwarding information received from a host listed as a trusted proxy is not kept separate from Dovecot's own authent... | 4.3 | 0.0024 |  |

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Data as of 2026-11-10T13:56:55Z 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

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