CVE-2026-75002: In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, mail search and LITERAL+ byte-count desynchronization could l

Description

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, mail search and LITERAL+ byte-count desynchronization could lead to information disclosure or privilege escalation via IMAP command injection.

Also Affects

Downstream vendors/products affected by this vulnerability

References

• https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3
• https://github.com/roundcube/roundcubemail/releases/tag/1.6.18
• https://github.com/roundcube/roundcubemail/commit/73233abe581b3b31cefd00041c7086c40e1793ea
• https://github.com/roundcube/roundcubemail/releases/tag/1.7.3
• https://github.com/roundcube/roundcubemail/commit/404d43f1b0125319c3cf8c9e3df39074c0cb80ad

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