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Medium severity4.3OSV Advisory· Published Jan 28, 2026· Updated Jun 17, 2026

CVE-2025-68659

CVE-2025-68659

Description

Discourse is an open source discussion platform. Versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 have an application level denial of service vulnerabilityin the username change functionality at try.discourse.org. The vulnerability allows attackers to cause noticeable server delays and resource exhaustion by sending large JSON payloads to the username preference endpoint PUT /u//preferences/username, resulting in degraded performance for other users and endpoints. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. No known workarounds are available.

AI Insight

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

Affected products

6
  • Discourse (software)/DiscourseOSV5 versions
    beta, latest-release, release, …+ 4 more
    • (no CPE)range: beta, latest-release, release, …
    • cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:*range: <3.5.4
    • cpe:2.3:a:discourse:discourse:2025.12.0:*:*:*:stable:*:*:*
    • cpe:2.3:a:discourse:discourse:2026.1.0:*:*:*:stable:*:*:*
    • (no CPE)range: <3.5.4, <2025.11.2, <2025.12.1, <2026.1.0
  • osv-coords
    pkg:bitnami/discourse
    Range: < 3.5.4

Patches

Vulnerability mechanics

References

1

News mentions

0

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