Medium severity5.4NVD Advisory· Published Apr 3, 2026· Updated Apr 7, 2026
CVE-2026-35540
CVE-2026-35540
Description
An issue was discovered in Roundcube Webmail 1.6.0 before 1.6.14. Insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts.
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
7- github.com/roundcube/roundcubemail/commit/27ec6cc9cb25e1ef8b4d4ef39ce76d619caa6870nvdPatchWEB
- github.com/roundcube/roundcubemail/commit/579b68eff90650a5c782e153debd66c765648942nvdPatchWEB
- github.com/advisories/GHSA-vxg2-hhgr-37fxghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-35540ghsaADVISORY
- roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14nvdVendor AdvisoryWEB
- github.com/roundcube/roundcubemail/releases/tag/1.6.14nvdRelease NotesWEB
- github.com/roundcube/roundcubemail/releases/tag/1.7-rc5nvdRelease NotesWEB
News mentions
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