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Medium severity4.3NVD Advisory· Published Mar 26, 2025· Updated Jun 17, 2026

CVE-2025-24808

CVE-2025-24808

Description

Discourse is an open-source discussion platform. Prior to versions 3.3.4 on the stable branch and 3.4.0.beta5 on the beta branch, someone who is about to reach the limit of users in a group DM may send requests to add new users in parallel. The requests might all go through ignoring the limit due to a race condition. The patch in versions 3.3.4 and 3.4.0.beta5 uses the lock step in service to wrap part of the add_users_to_channel service inside a distributed lock/mutex in order to avoid the race condition.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

9
  • Discourse (software)/Discourse8 versions
    cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:*+ 7 more
    • cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:*range: <3.4.0
    • cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:*range: <3.3.3
    • cpe:2.3:a:discourse:discourse:3.4.0:beta1:*:*:beta:*:*:*
    • cpe:2.3:a:discourse:discourse:3.4.0:beta2:*:*:beta:*:*:*
    • cpe:2.3:a:discourse:discourse:3.4.0:beta3:*:*:beta:*:*:*
    • cpe:2.3:a:discourse:discourse:3.4.0:beta4:*:*:beta:*:*:*
    • (no CPE)range: before 3.3.4 (stable), before 3.4.0.beta5 (beta)
    • (no CPE)range: < 3.3.4
  • osv-coords
    pkg:bitnami/discourse
    Range: < 3.4.0

Patches

Vulnerability mechanics

References

2

News mentions

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