CVE-2026-55424
- Source
- https://cve.org/CVERecord?id=CVE-2026-55424
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55424.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-55424
- Aliases
-
- BIT-discourse-2026-55424
- GHSA-695w-7fv8-mxg3
- Published
- 2026-07-09T22:01:22.249Z
- Modified
- 2026-08-05T03:32:39.072265754Z
- Severity
-
- 7.4 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Discourse: Topic featured link susceptible to stored XSS
- Details
-
Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, a topic "featured link" was not sufficiently normalized and escaped before being rendered in the topic list, allowing a user who can set a featured link to inject JavaScript when default Content Security Policy protections were modified or disabled. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.
- Database specific
{ "cna_assigner": "GitHub_M", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55424.json", "cwe_ids": [ "CWE-79" ] }- References
-
- 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/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55424.json
- https://github.com/discourse/discourse/security/advisories/GHSA-695w-7fv8-mxg3
- https://nvd.nist.gov/vuln/detail/CVE-2026-55424
- https://github.com/discourse/discourse/commit/1bce8881e4253d9bbab56f011a12ef899b926b59
- https://github.com/discourse/discourse/commit/6679d9a5083488bae10c2adbb345c481c583242c
- https://github.com/discourse/discourse/commit/6828aee9b15c2655d63b515ac919830bd540ff83
- https://github.com/discourse/discourse/commit/c9b9405f5bd0bf0269e505e28e3aad388d7657c5
Affected packages
Git / github.com/discourse/discourse
Affected ranges
- Type
- GIT
- Repo
- https://github.com/discourse/discourse
- Events
-
IntroducedFixedIntroducedFixedIntroducedFixedIntroducedFixedFixedFixedFixedFixed
- Database specific
{ "extracted_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" }, { "introduced": "2026.6.0" }, { "last_affected": "2026.6.0" } ], "cpe": [ "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*", "cpe:2.3:a:discourse:discourse:2026.6.0:*:*:*:latest:*:*:*" ], "source": [ "CPE_RANGE", "CPE_STRING", "REFERENCES" ] }