CVE-2026-55420
- Source
- https://cve.org/CVERecord?id=CVE-2026-55420
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55420.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-55420
- Aliases
-
- BIT-discourse-2026-55420
- GHSA-7wq5-jgww-5rw3
- Published
- 2026-07-09T17:54:07.940Z
- Modified
- 2026-08-12T03:51:20.266505937Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- Discourse: Remote code execution via pdf uploads
- Details
-
Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, under certain non-default configurations, processing of PDF uploads could be exploited to obtain RCE on the server. This issue is patched in 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-78" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55420.json" }- 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-2026-55420.json
- https://github.com/discourse/discourse/security/advisories/GHSA-7wq5-jgww-5rw3
- https://nvd.nist.gov/vuln/detail/CVE-2026-55420
- https://github.com/discourse/discourse/commit/ca5a7e06167561928556afa2f237d67e459c6914
Affected packages
Git / github.com/discourse/discourse
Affected ranges
- Type
- GIT
- Repo
- https://github.com/discourse/discourse
- Events
-
IntroducedFixedIntroducedFixedIntroducedFixedIntroducedFixedFixed
- Database specific
-
Show details
{ "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" } ], "source": [ "CPE_RANGE", "CPE_STRING", "REFERENCES" ], "cpe": [ "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*", "cpe:2.3:a:discourse:discourse:2026.6.0:*:*:*:latest:*:*:*" ] }