# CVE-2019-18928: cyrus-admin: Cyrus IMAP 2.5.x before 2.5.14 and 3.x before 3.0.12 allows privilegeescalation because an HTTP request may be interp...

CVE-2019-18928 is fixed in 12 products on 1 platform, first by cyrus-admin 3.0.12-1, released November 14, 2019. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2019-18928
- Priority: High
- CVSS: 9.8 (Medium)
- EPSS: 0.0239
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 14, 2019

## Description

Cyrus IMAP 2.5.x before 2.5.14 and 3.x before 3.0.12 allows privilegeescalation because an HTTP request may be interpreted in the authenticationcontext of an unrelated previous request that arrived over the sameconnection.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | cyrus-admin Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-admin 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-admin-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-admin Ubuntu 20.04 LTS (focal) | 3.0.12-1 | [cyrus-admin 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-admin-3.0.12-1.md) | Nov 14, 2019 |
| Linux | cyrus-admin Ubuntu 24.10 (oracular) | 3.0.12-1 | [cyrus-admin 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-cyrus-admin-3.0.12-1.md) | Jan 16, 2026 |
| Linux | cyrus-caldav Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-caldav 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-caldav-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-caldav Ubuntu 20.04 LTS (focal) | 3.0.12-1 | [cyrus-caldav 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-caldav-3.0.12-1.md) | Nov 14, 2019 |
| Linux | cyrus-caldav Ubuntu 24.10 (oracular) | 3.0.12-1 | [cyrus-caldav 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-cyrus-caldav-3.0.12-1.md) | Jan 16, 2026 |
| Linux | cyrus-clients Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-clients 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-clients-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-clients Ubuntu 20.04 LTS (focal) | 3.0.12-1 | [cyrus-clients 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-clients-3.0.12-1.md) | Nov 14, 2019 |
| Linux | cyrus-clients Ubuntu 24.10 (oracular) | 3.0.12-1 | [cyrus-clients 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-cyrus-clients-3.0.12-1.md) | Jan 16, 2026 |
| Linux | cyrus-common Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-common 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-common-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-common Ubuntu 20.04 LTS (focal) | 3.0.12-1 | [cyrus-common 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-common-3.0.12-1.md) | Nov 14, 2019 |
| Linux | cyrus-common Ubuntu 24.10 (oracular) | 3.0.12-1 | [cyrus-common 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-cyrus-common-3.0.12-1.md) | Jan 16, 2026 |
| Linux | cyrus-imapd RHEL 8 | 0:3.0.7-19.el8 | [RHSA-2020:4655](https://patchblox.com/security/data/fix/linux/rhsa-2020-4655.md) | Nov 4, 2020 |
| Linux | cyrus-imapd Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-imapd 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-imapd-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-imapd Ubuntu 20.04 LTS (focal) | 3.0.12-1 | [cyrus-imapd 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-imapd-3.0.12-1.md) | Nov 14, 2019 |
| Linux | cyrus-imapd Ubuntu 24.10 (oracular) | 3.0.12-1 | [cyrus-imapd 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-cyrus-imapd-3.0.12-1.md) | Jan 16, 2026 |
| Linux | cyrus-imapd ol 8 | 0:3.0.7-19.el8 | [ELSA-2020-4655](https://patchblox.com/security/data/fix/linux/elsa-2020-4655.md) | Nov 10, 2020 |
| Linux | cyrus-imapd-utils RHEL 8 | 0:3.0.7-19.el8 | [RHSA-2020:4655](https://patchblox.com/security/data/fix/linux/rhsa-2020-4655.md) | Nov 4, 2020 |
| Linux | cyrus-imapd-utils ol 8 | 0:3.0.7-19.el8 | [ELSA-2020-4655](https://patchblox.com/security/data/fix/linux/elsa-2020-4655.md) | Nov 10, 2020 |
| Linux | cyrus-imapd-vzic RHEL 8 | 0:3.0.7-19.el8 | [RHSA-2020:4655](https://patchblox.com/security/data/fix/linux/rhsa-2020-4655.md) | Nov 4, 2020 |
| Linux | cyrus-imapd-vzic ol 8 | 0:3.0.7-19.el8 | [ELSA-2020-4655](https://patchblox.com/security/data/fix/linux/elsa-2020-4655.md) | Nov 10, 2020 |
| Linux | cyrus-murder Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-murder 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-murder-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-murder Ubuntu 20.04 LTS (focal) | 3.0.12-1 | [cyrus-murder 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-murder-3.0.12-1.md) | Nov 14, 2019 |
| Linux | cyrus-murder Ubuntu 24.10 (oracular) | 3.0.12-1 | [cyrus-murder 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-cyrus-murder-3.0.12-1.md) | Jan 16, 2026 |
| Linux | cyrus-nntpd Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-nntpd 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-nntpd-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-nntpd Ubuntu 20.04 LTS (focal) | 3.0.12-1 | [cyrus-nntpd 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-nntpd-3.0.12-1.md) | Nov 14, 2019 |
| Linux | cyrus-nntpd Ubuntu 24.10 (oracular) | 3.0.12-1 | [cyrus-nntpd 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-cyrus-nntpd-3.0.12-1.md) | Jan 16, 2026 |
| Linux | cyrus-pop3d Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-pop3d 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-pop3d-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-pop3d Ubuntu 20.04 LTS (focal) | 3.0.12-1 | [cyrus-pop3d 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-pop3d-3.0.12-1.md) | Nov 14, 2019 |
| Linux | cyrus-pop3d Ubuntu 24.10 (oracular) | 3.0.12-1 | [cyrus-pop3d 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-cyrus-pop3d-3.0.12-1.md) | Jan 16, 2026 |
| Linux | cyrus-replication Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-replication 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-replication-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-replication Ubuntu 20.04 LTS (focal) | 3.0.12-1 | [cyrus-replication 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-replication-3.0.12-1.md) | Nov 14, 2019 |
| Linux | cyrus-replication Ubuntu 24.10 (oracular) | 3.0.12-1 | [cyrus-replication 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-cyrus-replication-3.0.12-1.md) | Jan 16, 2026 |
| Linux | libcyrus-imap-perl Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [libcyrus-imap-perl 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcyrus-imap-perl-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | libcyrus-imap-perl Ubuntu 20.04 LTS (focal) | 3.0.12-1 | [libcyrus-imap-perl 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcyrus-imap-perl-3.0.12-1.md) | Nov 14, 2019 |
| Linux | libcyrus-imap-perl Ubuntu 24.10 (oracular) | 3.0.12-1 | [libcyrus-imap-perl 3.0.12-1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcyrus-imap-perl-3.0.12-1.md) | Jan 16, 2026 |

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