VulnerabilityAnalyzed
CVE-2026-62644
In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, the password plugin of the Roundcube Webmail was subject to username spoofing via session data, which could lead to account takeover.
CRITICAL 9.8EPSS 0.50%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, the password plugin of the Roundcube Webmail was subject to username spoofing via session data, which could lead to account takeover.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.50% probability · 41th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-290
- Affected
- roundcube/webmail
- Source
- cve@mitre.org
References
- https://github.com/roundcube/roundcubemail/commit/5cdc6a48b40beabff7f0bf5d9035f4491e877e4cPatch
- https://github.com/roundcube/roundcubemail/commit/7414fef51cd2407d39faab99680763f10ed5231dPatch
- https://github.com/roundcube/roundcubemail/commit/83150ce04d689a70f92d511bcae40adba8d55476Patch
- https://github.com/roundcube/roundcubemail/commit/9a96c20d8c7c9135876b68bebd6960af3ee60923Patch
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.17Release Notes
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.2Release Notes
- https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.