Is CVE-2026-31805 actively exploited?

No active exploitation of CVE-2026-31805 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-31805 be exploited remotely?

Yes. CVE-2026-31805 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-31805?

CVE-2026-31805 has a CVSS score of 8.2 (HIGH).

HOME VULNERABILITIESCVE-2026-31805

HIGH

CVE-2026-31805

CWE-20Published: March 20, 2026· Updated: Mar 24, 2026

8.2

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.6th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-31805 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 8.2.