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CVE-2026-25916

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

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 1.5.13, 1.6.13
1 proof of concept on GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Roundcube Webmail

    fixed in 1.5.13; From 1.6.0 · fixed in 1.6.13

References 4

nullcathedral.com

GitHub · roundcube/roundcubemail

news.ycombinator.com

GitHub · mbanyamer/CVE-2026-25916-Roundcube-Webmail-DOM-based-XSS-Exploit-via-SVG-href-Attribute