PT-2026-56999 · Discourse · Discourse
CVE-2026-53962
·
Published
2026-07-09
·
Updated
2026-07-15
CVSS v3.1
5.4
Medium
| Vector | AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Name of the Vulnerable Software and Affected Versions
Discourse versions prior to 2026.6.0
Discourse versions prior to 2026.5.1
Discourse versions prior to 2026.4.2
Discourse versions prior to 2026.1.5
Description
Insufficient SVG sanitization during the handling of uploads and user avatars can lead to cross-site scripting (XSS), a technique where malicious scripts are injected into trusted websites. This occurs when a user visits specific URLs that are not typically part of standard community browsing.
Recommendations
Update to version 2026.6.0
Update to version 2026.5.1
Update to version 2026.4.2
Update to version 2026.1.5
Exploit
Fix
XSS
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Weakness Enumeration
Related Identifiers
Affected Products
Discourse