CVE-2026-75000 Security feature bypass in Webmail
Attackers can bypass remote image blocking via SVG sanitization flaws, potentially leading to information disclosure or privilege escalation in Roundcube Webmail.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-75000?
CVE-2026-75000 is a medium-severity vulnerability in Roundcube Webmail, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, improper HTML/CSS sanitization of the SVG animate "by" attribute may lead to remote image blocking bypass, which in turn may lead to information disclosure or privilege escalation.
Weakness: CWE-669
Which versions are affected by CVE-2026-75000?
It affects 1 product.
Products include Roundcube Webmail.
How do I fix CVE-2026-75000?
Upgrade to a fixed version.
Is CVE-2026-75000 being exploited?
There is no known exploitation of CVE-2026-75000 in the wild and no public exploit code.
Other vulnerabilities in Roundcube Webmail
Sources
Also known as DEBIAN-CVE-2026-75000, GHSA-4649-47v5-9mqg, UBUNTU-CVE-2026-75000.