CVE-2026-35540

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2026-35540
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-03 05:16:22 UTC
Updated2026-04-03 05:16:22 UTC
DescriptionAn 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.

Risk And Classification

Primary CVSS: v3.1 5.4 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

Problem Types: CWE-669 | CWE-669 CWE-669 Incorrect Resource Transfer Between Spheres

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.4MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
3.1CNACVSS5.4MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Roundcube Webmail affected 1.6.0 1.6.14 semver Not specified

References

ReferenceSourceLinkTags
roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14 [email protected] roundcube.net
github.com/roundcube/roundcubemail/releases/tag/1.6.14 [email protected] github.com
github.com/roundcube/roundcubemail/commit/27ec6cc9cb25e1ef8b4d4ef39ce76d... [email protected] github.com
github.com/roundcube/roundcubemail/releases/tag/1.7-rc5 [email protected] github.com
github.com/roundcube/roundcubemail/commit/579b68eff90650a5c782e153debd66... [email protected] github.com
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