Description

Discourse is an open-source discussion platform. Prior to versions 3.4.3 on the stable branch and 3.5.0.beta3 on the beta branch, the users limit for a DM can be bypassed, thus giving the ability to potentially create a DM with every user from a site in it. This issue has been patched in stable version 3.4.3 and beta version 3.5.0.beta3.

Classification

CVE ID: CVE-2025-32376

CVSS Base Severity: MEDIUM

CVSS Base Score: 4.8

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

Affected Products

Vendor: discourse

Product: discourse

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.03% (probability of being exploited)

EPSS Percentile: 7.31% (scored less or equal to compared to others)

EPSS Date: 2025-05-29 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-32376
https://github.com/discourse/discourse/security/advisories/GHSA-mqqq-h2x3-46fr
https://github.com/discourse/discourse/commit/21a7f3162221c393f9bb13721451aa7f237d881a

Timeline