CVE-2026-35539

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2026-35539
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-03 05:16:21 UTC
Updated2026-04-03 05:16:21 UTC
DescriptionAn 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.

Risk And Classification

Primary CVSS: v3.1 6.1 MEDIUM from [email protected]

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

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.1CNACVSS6.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Roundcube Webmail affected 1.5.14 semver Not specified
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/commit/d742954ccbcdee7020f8f2e7c49ce0... [email protected] github.com
github.com/roundcube/roundcubemail/releases/tag/1.6.14 [email protected] github.com
github.com/roundcube/roundcubemail/commit/10a6d1fa8acac85c727b0a6ae4a664... [email protected] github.com
github.com/roundcube/roundcubemail/releases/tag/1.7-rc5 [email protected] github.com
github.com/roundcube/roundcubemail/releases/tag/1.5.14 [email protected] github.com
github.com/roundcube/roundcubemail/commit/1b30edf5369668c92fe91dae3d52e4... [email protected] github.com
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