Vulnerability · Published Apr 30, 2025 · Assigned by GitHub_M

CVE-2025-32376Discourse DM limits aren’t always properly enforced

Medium 4.8

In plain English

A medium-severity improper access control in discourse from discourse. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).

Severity (CVSS 4.0)4.8Medium

Exploit odds (30 days)0.3%top 82.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
discourse	discourse	< 3.4.3>= 3.5.0.beta1, < 3.5.0.beta3

Weakness: CWE-284 · 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

References

https://github.com/discourse/discourse/security/advisories/GHSA-mqqq-h2x3-46fr x_refsource_CONFIRM
https://github.com/discourse/discourse/commit/21a7f3162221c393f9bb13721451aa7f237d881a x_refsource_MISC