CVE-2022-23549

Name: CVE-2022-23549
Creator: NVD / NIST
Published: 2023-01-05T19:15:09.5+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.57%

Last modified Jun 17, 2026

CVE-2022-23549 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 2.9.0.beta16 on the `beta` and `tests-passed` branches, users can create posts with raw body longer than the `max_length` site setting by including html comments that are not counted toward the character limit. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

Description

Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 2.9.0.beta16 on the `beta` and `tests-passed` branches, users can create posts with raw body longer than the `max_length` site setting by including html comments that are not counted toward the character limit. This issue is patched in versions 2.8.14 and 2.9.0.beta16. There are no known workarounds.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.57%

43.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions	Update
Discourse	Discourse	< 2.8.14	—
Discourse	Discourse	2.9.0	Beta1
Discourse	Discourse	3.0.0	Beta15

References

https://github.com/discourse/discourse/commit/bf6b08670a927cc80bb090b7a2e710b4b554e6a8Patch, Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-p47g-v5wr-p4xpThird Party Advisory
https://github.com/discourse/discourse/commit/bf6b08670a927cc80bb090b7a2e710b4b554e6a8Patch, Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-p47g-v5wr-p4xpThird Party Advisory

Timeline

Published: Jan 5, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-23549?

How severe is CVE-2022-23549?

CVE-2022-23549 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.

How do I fix CVE-2022-23549?

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-2022-23549?

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

Scan your code now

Source: NVD / NIST