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Medium severity5.3NVD Advisory· Published Feb 26, 2026· Updated Jun 17, 2026

CVE-2026-27021

CVE-2026-27021

Description

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, the voters endpoint in the poll plugin lacked post visibility checks which allowed unauthorized access to voters details of polls in any post. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

Affected products

5
  • Discourse (software)/Discourse4 versions
    cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*+ 3 more
    • cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*range: <2025.12.0
    • cpe:2.3:a:discourse:discourse:2026.2.0:*:*:*:latest:*:*:*
    • (no CPE)range: <2025.12.2, <2026.1.1, <2026.2.0
    • (no CPE)range: < 2025.12.2
  • osv-coords
    pkg:bitnami/discourse
    Range: < 2025.12.2

Patches

Vulnerability mechanics

References

1

News mentions

0

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