CVE-2022-41921

Name: CVE-2022-41921
Creator: NVD / NIST
Published: 2022-11-28T15:15:10.543+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.50%

Last modified Jun 17, 2026

CVE-2022-41921 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Discourse is an open-source discussion platform. Prior to version 2.9.0.beta13, users can post chat messages of an unlimited length, which can cause a denial of service for other users when posting huge amounts of text. EPSS estimates a 0.50% chance of exploitation in the next 30 days.

Description

Discourse is an open-source discussion platform. Prior to version 2.9.0.beta13, users can post chat messages of an unlimited length, which can cause a denial of service for other users when posting huge amounts of text. Users should upgrade to version 2.9.0.beta13, where a limit has been introduced. No known workarounds are available.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS Probability

0.50%

39.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Discourse	Discourse	< 2.9.0	—
Discourse	Discourse	2.9.0	Beta1

References

https://github.com/discourse/discourse/commit/3de765c89524a526ce611e11468d758a471a933fPatch, Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-mfh7-6cv6-qcccThird Party Advisory
https://github.com/discourse/discourse/commit/3de765c89524a526ce611e11468d758a471a933fPatch, Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-mfh7-6cv6-qcccThird Party Advisory

Timeline

Published: Nov 28, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-41921?

How severe is CVE-2022-41921?

CVE-2022-41921 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.

How do I fix CVE-2022-41921?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-41921?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST