Protection mechanism failure in Roundcube - CVE-2026-25916
Published: February 8, 2026 / Updated: February 13, 2026
Vulnerability identifier: #VU122451
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/U:Green
CVE-ID: CVE-2026-25916
CWE-ID: CWE-693
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: Roundcube
Affected software:
Roundcube
Roundcube
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to insufficient implementation of security measures. A remote attacker can send a specially crafted email and bypass image blocking via SVG content.
How to mitigate CVE-2026-25916
Install updates from vendor's website.