CVE-2026-35542: medium-severity vulnerability in Roundcube Webmail
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.4%
An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. The remote image blocking feature can be bypassed via a crafted background attribute of a BODY element in an e-mail message. This may lead to information disclosure or access-control bypass.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
Roundcube · WebmailRelated CVEs — Roundcube Webmail
In the same product, most dangerous first.
References
https://github.com/roundcube/roundcubemail/commit/e052328e3dc75f13adc2e314eaa4096ac21084adhttps://github.com/roundcube/roundcubemail/commit/fd0e98178db5c73eaa93d005b561874923f9b0f0https://github.com/roundcube/roundcubemail/commit/fde14d01adc9f37893cd82b635883e516ed453f8https://github.com/roundcube/roundcubemail/releases/tag/1.5.14https://github.com/roundcube/roundcubemail/releases/tag/1.6.14https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14