CVE-2026-25916
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SVG feImage Bypass in Roundcube Webmail Image Blocking

Publication date: 2026-02-09

Last updated on: 2026-02-09

Assigner: MITRE

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.

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Meta Information

Published
2026-02-09
Last Modified
2026-02-09
Generated
2026-07-06
AI Q&A
2026-02-09
EPSS Evaluated
2026-07-05
NVD
CVE-2026-25916
EUVD
EUVD-2026-6937

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
roundcube roundcube to 1.5.13 (exc)
roundcube roundcube to 1.6.13 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-420 The product protects a primary channel, but it does not use the same level of protection for an alternate channel.

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Executive Summary

This vulnerability affects Roundcube Webmail versions before 1.5.13 and 1.6 before 1.6.13. When the "Block remote images" feature is enabled, it fails to block SVG feImage elements. This means that even though remote images are supposed to be blocked, SVG images using the feImage filter can still be loaded.

Impact Analysis

The vulnerability can lead to partial circumvention of the "Block remote images" feature in Roundcube Webmail. This could allow remote SVG images to be loaded without user consent, potentially exposing users to privacy risks such as tracking or leaking information through these images.

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