CVE-2026-114729 Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a remote content blocking bypass.
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-114729?
CVE-2026-114729 is a medium-severity vulnerability in Roundcube Webmail, published on 22 Oct 2026.
Official description
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a remote content blocking bypass. rcube_washtml inspected the SVG SMIL animation attributes `to`, `from` and values for URIs, but not `by`; so markup such as in an HTML message caused remote content to be loaded without the user's consent, disclosing the client IP address and confirming that the message was opened. Upstream fixed this in the commit “Fix remote-content blocker bypass via SVG SMIL `by` attribute”.
Weakness: CWE-184
Which versions are affected by CVE-2026-114729?
How do I fix CVE-2026-114729?
Upgrade to a fixed version.
Is CVE-2026-114729 being exploited?
There is no known exploitation of CVE-2026-114729 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-114729, GHSA-38c9-3phj-gg36, UBUNTU-CVE-2026-114729.