CVE-2026-31805
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.
- Affected products
- Discourse
- Discourse
- < 2026.1.2, 2026.2.1, 2026.3.0
- Fix
- Available
- CVSS 3.1
- 8.2 HIGH
- EPSS
- 0.2% (14th percentile)
- Weakness
- CWE-863, CWE-20
- NVD status
- Analyzed
- Published
- 2026-03-20
No indexed exploits for CVE-2026-31805 yet
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No exploit for CVE-2026-31805 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.