CVE-2026-31805
- Source
- https://cve.org/CVERecord?id=CVE-2026-31805
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31805.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-31805
- Aliases
-
- BIT-discourse-2026-31805
- GHSA-fgxm-prjv-g823
- Published
- 2026-03-20T03:07:14Z
- Modified
- 2026-10-21T02:30:35Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
- Summary
- Discourse has a poll authorization bypass via post_id array parameter
- Details
-
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an authorization bypass in the poll plugin allowed authenticated users to vote on, remove votes from, or toggle the open/closed status of polls they did not have access to. By passing post_id as an array (e.g. post_id[]=&post_id[]=), the authorization check resolves to the accessible post while the poll lookup resolves to a different post's poll. This affects the vote, remove_vote, and toggle_status endpoints in DiscoursePoll::PollsController. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-20", "CWE-863" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31805.json" }- References
Affected packages
Git / github.com/discourse/discourse
Affected ranges
- Type
- GIT
- Repo
- https://github.com/discourse/discourse
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*", "range": [ { "introduced": "2026.1.0" }, { "fixed": "2026.1.2" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*", "range": [ { "introduced": "2026.2.0" }, { "fixed": "2026.2.1" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:discourse:discourse:2026.3.0:*:*:*:latest:*:*:*", "range": [ { "introduced": "2026.3.0" }, { "last_affected": "2026.3.0" } ], "source": "CPE_STRING" }, { "range": [ { "fixed": "1a6b3cdd8939053f485a60a6ea004a40878392c4" } ], "source": "REFERENCES_COMMIT" } ] }