CVE-2026-35545

EUVD-2026-18593
An issue was discovered in Roundcube Webmail before 1.5.15 and 1.6.15. The remote image blocking feature can be bypassed via SVG content in an e-mail message. This may lead to information disclosure or access-control bypass. This involves the animate element with attributeName=fill/filter/stroke.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
mitreCNA
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
roundcubewebmail
𝑥
< 1.5.15
roundcubewebmail
1.6.0 ≤
𝑥
< 1.6.15
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
roundcube
bookworm
vulnerable
bookworm (security)
vulnerable
bullseye
vulnerable
bullseye (security)
1.4.15+dfsg.1-1+deb11u8
fixed
forky
1.6.15+dfsg-1
fixed
sid
1.6.15+dfsg-1
fixed
trixie
vulnerable
trixie (security)
vulnerable
Common Weakness Enumeration
References
https://github.com/roundcube/roundcubemail/commit/7ad62de184368bf42c0f522d1aacc030f5ddcc46
https://github.com/roundcube/roundcubemail/commit/9d18d524f3cc211003fc99e2e54eed09a2f3da88
https://github.com/roundcube/roundcubemail/commit/fe1320b199d3a2f58351bb699c9ed4316e73221b
https://github.com/roundcube/roundcubemail/releases/tag/1.5.15
https://github.com/roundcube/roundcubemail/releases/tag/1.6.15
https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc6
https://roundcube.net/news/2026/03/29/security-updates-1.7-rc6-1.6.15-1.5.15