CVE-2026-53962
MEDIUM SEVERITYCVSS Score & Metrics
Base Score
5.4 / 10
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Vulnerability Description
Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, insufficient SVG sanitization in upload and user avatar handling could lead to cross-site scripting when a user visited specific URLs that are not normally part of community browsing. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-79
Source
NVD
Vendor
discourse
Product
discourse
External References
- https://github.com/discourse/discourse/commit/3ee8343cd7f00d59d8513bee0a12e02d50bfc358
- https://github.com/discourse/discourse/commit/810c2715799fd08b06fd6ffc664d9562fe9ea6ff
- https://github.com/discourse/discourse/commit/92a699d89b84685b6fdd63cd0d0e371793c69dad
- https://github.com/discourse/discourse/commit/b8ceb49f4ba52257be30eb3c2ce51a5bf03be5fe
- https://github.com/discourse/discourse/releases/tag/v2026.1.5
- https://github.com/discourse/discourse/releases/tag/v2026.4.2
- https://github.com/discourse/discourse/releases/tag/v2026.5.1
- https://github.com/discourse/discourse/releases/tag/v2026.6.0
- https://github.com/discourse/discourse/security/advisories/GHSA-jmcf-3367-78vv
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