CVE-2023-48297

Discourse vulnerable to unlimited mentioned users in message serializer

State: Published
Severity: 8.6 High
Published: Jan 12, 2024
Updated: Jun 17, 2025
Reserved: Nov 14, 2023

Description

Discourse is a platform for community discussion. The message serializer uses the full list of expanded chat mentions (@all and @here) which can lead to a very long array of users. This issue was patched in versions 3.1.4 and beta 3.2.0.beta5.

Scores

CVSS	Score	Vector	Source
3.1	8.6 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-400 Uncontrolled Resource Consumption

Affected Products

Product	Versions
discoursediscourse	< 3.1.4Affected >= 3.2.0beta1, < 3.2.0.beta4Affected

References

https://github.com/discourse/discourse/security/advisories/GHSA-hf2v-r5xm-8p37

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.