CVEvulnerability
CVE-2026-53962
5.4 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-07-09
- Last modified
- 2026-07-14
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.4 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- Weaknesses
- CWE-79
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.
Affected configurations
• discourse discourse (>= 2026.1.0 < 2026.1.5)
• discourse discourse (>= 2026.4.0 < 2026.4.2)
• discourse discourse (>= 2026.5.0 < 2026.5.1)
• discourse discourse 2026.6.0
Related
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://github.com/discourse/discourse/commit/3ee8343cd7f00d59d8513bee0a12e02d50bfc358 Patch
- https://github.com/discourse/discourse/commit/810c2715799fd08b06fd6ffc664d9562fe9ea6ff Patch
- https://github.com/discourse/discourse/commit/92a699d89b84685b6fdd63cd0d0e371793c69dad Patch
- https://github.com/discourse/discourse/commit/b8ceb49f4ba52257be30eb3c2ce51a5bf03be5fe Patch
- https://github.com/discourse/discourse/releases/tag/v2026.1.5 Release Notes
- https://github.com/discourse/discourse/releases/tag/v2026.4.2 Release Notes
- https://github.com/discourse/discourse/releases/tag/v2026.5.1 Release Notes
- https://github.com/discourse/discourse/releases/tag/v2026.6.0 Release Notes
- https://github.com/discourse/discourse/security/advisories/GHSA-jmcf-3367-78vv Vendor Advisory