CVE-2026-33395
- Source
- https://cve.org/CVERecord?id=CVE-2026-33395
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33395.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-33395
- Aliases
-
- BIT-discourse-2026-33395
- GHSA-23c7-gq89-xm5v
- Published
- 2026-03-19T22:33:19.328Z
- Modified
- 2026-08-12T03:51:29.576243148Z
- Severity
-
- 4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
- Summary
- Discourse has stored clickâbased XSS via Graphviz SVG javascript: links
- Details
-
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the discourse-graphviz plugin contains a stored cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious JavaScript code through DOT graph definitions. For instances with CSP disabled only. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. As a workaround, disable the graphviz plugin, upgrade to a patched version, or enable a content security policy.
- Database specific
{ "cwe_ids": [ "CWE-79" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33395.json", "cna_assigner": "GitHub_M" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33395.json
- https://github.com/discourse/discourse/security/advisories/GHSA-23c7-gq89-xm5v
- https://nvd.nist.gov/vuln/detail/CVE-2026-33395
- https://github.com/discourse/discourse/commit/0471e68ed0b594bf386e068f228849244b880ef1
- https://github.com/discourse/discourse/commit/0c861df8bea03dcc01b60da6cc7038e6c88de4ee
- https://github.com/discourse/discourse/commit/472f9e1f7855307e489e9eaa6825d5335dfc08b5
Affected packages
Git / github.com/discourse/discourse
Affected ranges
- Type
- GIT
- Repo
- https://github.com/discourse/discourse
- Events
-
IntroducedFixedIntroducedFixedIntroducedFixedFixedFixed
- Database specific
-
Show details
{ "cpe": [ "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*", "cpe:2.3:a:discourse:discourse:2026.3.0:*:*:*:latest:*:*:*" ], "extracted_events": [ { "introduced": "2026.1.0" }, { "fixed": "2026.1.2" }, { "introduced": "2026.2.0" }, { "fixed": "2026.2.1" }, { "introduced": "2026.3.0" }, { "last_affected": "2026.3.0" } ], "source": [ "CPE_RANGE", "CPE_STRING", "REFERENCES" ] }