High severity7.3NVD Advisory· Published Jul 9, 2026· Updated Jul 14, 2026
CVE-2026-53963
CVE-2026-53963
Description
Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, a malicious second factor name on an attacker-controlled account was not escaped in the delete confirmation dialog, allowing stored cross-site scripting when an administrator impersonated that account. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.
Affected products
4cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*range: >=2026.1.0,<2026.1.5
- cpe:2.3:a:discourse:discourse:2026.6.0:*:*:*:latest:*:*:*
- (no CPE)range: <2026.6.0, <2026.5.1, <2026.4.2, <2026.1.5
Patches
Vulnerability mechanics
References
9- github.com/discourse/discourse/commit/40de62cddadc65c328a1028ab999f3fa94adbfednvdPatch
- github.com/discourse/discourse/commit/529e17d4d570a48972e7cf64720e5dd1fdf23ca8nvdPatch
- github.com/discourse/discourse/commit/d92973e51a46cf6dd20c71e6068e6769b67eea5bnvdPatch
- github.com/discourse/discourse/commit/daea5214d833eacbdd3b1a78d99eb14e9cabd915nvdPatch
- github.com/discourse/discourse/security/advisories/GHSA-wg5x-7f23-m3r5nvdMitigationVendor Advisory
- github.com/discourse/discourse/releases/tag/v2026.1.5nvdRelease Notes
- github.com/discourse/discourse/releases/tag/v2026.4.2nvdRelease Notes
- github.com/discourse/discourse/releases/tag/v2026.5.1nvdRelease Notes
- github.com/discourse/discourse/releases/tag/v2026.6.0nvdRelease Notes
News mentions
0No linked articles in our index yet.