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CVE-2026-25916 | Mondoo Vulnerability Intelligence

Vulnerability IntelligenceCVE-2026-25916

CVE-2026-25916

MEDIUM4.3

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 Feb 9, 2026

Modified 6 months ago

Details

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

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/

https://www.cve.org/CVERecord?id=CVE-2026-25916

CVSS Analysis

CVSS v3.1

4.3

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

RequiredUI:R

Scope

Scope

UnchangedS:U

Impact

Confidentiality

LowC:L

Integrity

NoneI:N

Availability

NoneA:N

4.3/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Weakness Type (CWE)

Other

Ecosystems

Timeline

PublishedFeb 9, 2026

ModifiedFeb 9, 2026