What’s Vulnerable › Vulnerabilities

CVE-2026-25916

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-09 · updated 2026-06-17
• Weakness: CWE-420

Description

Roundcube Webmail before 1.5.13 and 1.6 before 1.6.13, when "Block remote images" is used, does not block SVG feImage.

Affected products

• Roundcube Webmail: before 1.5.13; from 1.6.0 before 1.6.13 — fixed in 1.5.13, 1.6.13

How to fix

Upgrade to a fixed version: Roundcube Webmail 1.5.13, 1.6.13. Check the vendor advisory for mitigations.

References

• https://github.com/roundcube/roundcubemail/commit/26d7677
• https://news.ycombinator.com/item?id=46937012
• https://nullcathedral.com/posts/2026-02-08-roundcube-svg-feimage-remote-image-bypass/

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