CVE-2026-62644: medium-severity vulnerability in Roundcube Webmail
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.4epss 0.3%
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/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
Affected products
Roundcube · WebmailRelated CVEs — Roundcube Webmail
In the same product, most dangerous first.
References
https://github.com/roundcube/roundcubemail/commit/5cdc6a48b40beabff7f0bf5d9035f4491e877e4chttps://github.com/roundcube/roundcubemail/commit/7414fef51cd2407d39faab99680763f10ed5231dhttps://github.com/roundcube/roundcubemail/commit/83150ce04d689a70f92d511bcae40adba8d55476https://github.com/roundcube/roundcubemail/commit/9a96c20d8c7c9135876b68bebd6960af3ee60923https://github.com/roundcube/roundcubemail/releases/tag/1.6.17https://github.com/roundcube/roundcubemail/releases/tag/1.7.2https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2