Medium severity6.1NVD Advisory· Published Apr 3, 2026· Updated Apr 7, 2026
CVE-2026-35539
CVE-2026-35539
Description
An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. XSS exists because of insufficient HTML attachment sanitization in preview mode. A victim must preview a text/html attachment.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
roundcube/roundcubemailPackagist | >= 1.7-beta, < 1.7-rc5 | 1.7-rc5 |
Affected products
2Patches
Vulnerability mechanics
References
9- github.com/roundcube/roundcubemail/commit/10a6d1fa8acac85c727b0a6ae4a6642bfa27bea1nvdPatchWEB
- github.com/roundcube/roundcubemail/commit/1b30edf5369668c92fe91dae3d52e477c808aa4fnvdPatchWEB
- github.com/roundcube/roundcubemail/commit/d742954ccbcdee7020f8f2e7c49ce0fca5a0efabnvdPatchWEB
- github.com/advisories/GHSA-x4q5-8j5g-hpjcghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-35539ghsaADVISORY
- roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14nvdVendor AdvisoryWEB
- github.com/roundcube/roundcubemail/releases/tag/1.5.14nvdRelease NotesWEB
- github.com/roundcube/roundcubemail/releases/tag/1.6.14nvdRelease NotesWEB
- github.com/roundcube/roundcubemail/releases/tag/1.7-rc5nvdRelease NotesWEB
News mentions
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