Dev March 2026

dev@lists.roundcube.net

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Security updates 1.6.15 and 1.5.15 (and 1.7-rc6) released
by Aleksander Machniak 29 Mar '26

29 Mar '26

We just published security updates to the 1.6 and 1.5 LTS versions of Roundcube Webmail, as well as a release candidate for coming 1.7. It provides fixes to some regressions introduced in the previous release as well a recently reported security vulnerability. ## Security fixes - SVG Animate FUNCIRI Attribute Bypass — Remote Image Loading via fill/filter/stroke, reported by class_nzm. See the full changelogs in the release notes on the Github download pages for the updated versions - https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc6 - https://github.com/roundcube/roundcubemail/releases/tag/1.6.15 - https://github.com/roundcube/roundcubemail/releases/tag/1.5.15 We strongly recommend to update your productive installations of Roundcube with this new versions. -- Alec

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Security updates 1.6.14 and 1.5.14 (and 1.7-rc5) released
by Aleksander Machniak 18 Mar '26

18 Mar '26

We just published security updates to the 1.6 and 1.5 LTS versions of Roundcube Webmail, as well as a release candidate for coming 1.7. They contain fixes for recently reported set of security vulnerabilities. ## Security fixes - Fix pre-auth arbitrary file write via unsafe deserialization in redis/memcache session handler, reported by y0us. - Fix bug where a password could get changed without providing the old password, reported by flydragon777. - Fix IMAP Injection + CSRF bypass in mail search, reported by Martila Security Research Team. - Fix remote image blocking bypass via various SVG animate attributes, reported by nullcathedral. - Fix remote image blocking bypass via a crafted body background attribute, reported by nullcathedral. - Fix fixed position mitigation bypass via use of !important, reported by nullcathedral. - Fix XSS issue in a HTML attachment preview, reported by aikido_security. - Fix SSRF + Information Disclosure via stylesheet links to a local network hosts, reported by Georgios Tsimpidas (aka Frey), Security Researcher at https://i0.rs/. See the full changelogs in the release notes on the Github download pages for the updated versions - https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5 - https://github.com/roundcube/roundcubemail/releases/tag/1.6.14 - https://github.com/roundcube/roundcubemail/releases/tag/1.5.14 We strongly recommend to update your productive installations of Roundcube with this new versions. -- Alec

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Dev March 2026