{"id":"BIT-discourse-2026-53963","summary":"Discourse: Stored-XSS in 2FA delete confirmation modal","details":"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.","aliases":["CVE-2026-53963","GHSA-wg5x-7f23-m3r5"],"modified":"2026-09-08T08:46:24.789373478Z","published":"2026-07-15T15:56:23.554Z","database_specific":{"cpes":["cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*"],"severity":"Critical"},"references":[{"type":"FIX","url":"https://github.com/discourse/discourse/commit/40de62cddadc65c328a1028ab999f3fa94adbfed"},{"type":"FIX","url":"https://github.com/discourse/discourse/commit/529e17d4d570a48972e7cf64720e5dd1fdf23ca8"},{"type":"FIX","url":"https://github.com/discourse/discourse/commit/d92973e51a46cf6dd20c71e6068e6769b67eea5b"},{"type":"FIX","url":"https://github.com/discourse/discourse/commit/daea5214d833eacbdd3b1a78d99eb14e9cabd915"},{"type":"ARTICLE","url":"https://github.com/discourse/discourse/releases/tag/v2026.1.5"},{"type":"ARTICLE","url":"https://github.com/discourse/discourse/releases/tag/v2026.4.2"},{"type":"ARTICLE","url":"https://github.com/discourse/discourse/releases/tag/v2026.5.1"},{"type":"ARTICLE","url":"https://github.com/discourse/discourse/releases/tag/v2026.6.0"},{"type":"ADVISORY","url":"https://github.com/discourse/discourse/security/advisories/GHSA-wg5x-7f23-m3r5"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53963"}],"affected":[{"package":{"name":"discourse","ecosystem":"Bitnami","purl":"pkg:bitnami/discourse"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2026.1.0"},{"fixed":"2026.1.5"},{"introduced":"2026.4.0"},{"fixed":"2026.4.2"},{"introduced":"2026.5.0"},{"fixed":"2026.5.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/discourse/BIT-discourse-2026-53963.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"}]}],"schema_version":"1.9.0"}