CVE-2022-23548

Name: CVE-2022-23548
Creator: NVD / NIST
Published: 2023-01-05T19:15:09.423+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.73%

Last modified Jun 17, 2026

CVE-2022-23548 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, parsing posts can be susceptible to regular expression denial of service (ReDoS) attacks. EPSS estimates a 0.73% 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, parsing posts can be susceptible to regular expression denial of service (ReDoS) attacks. 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

0.73%

49.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

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/pull/19737Patch, Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-7rw2-f4x7-7pxfThird Party Advisory
https://github.com/discourse/discourse/pull/19737Patch, Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-7rw2-f4x7-7pxfThird Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2022-23548?

How severe is CVE-2022-23548?

CVE-2022-23548 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.73% probability of exploitation in the next 30 days.

How do I fix CVE-2022-23548?

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-2022-23548?

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

Scan your code now

Source: NVD / NIST