CVE-2022-21642

Name: CVE-2022-21642
Creator: NVD / NIST
Published: 2022-01-05T19:15:09.053+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.73%

Last modified Jun 17, 2026

CVE-2022-21642 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Discourse is an open source platform for community discussion. In affected versions when composing a message from topic the composer user suggestions reveals whisper participants. EPSS estimates a 0.73% chance of exploitation in the next 30 days.

Description

Discourse is an open source platform for community discussion. In affected versions when composing a message from topic the composer user suggestions reveals whisper participants. The issue has been patched in stable version 2.7.13 and beta version 2.8.0.beta11. There is no workaround for this issue and users are advised to upgrade.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.73%

49.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Discourse	Discourse	< 2.7.13	—
Discourse	Discourse	2.8.0	Beta1

References

https://github.com/discourse/discourse/commit/702685b6a06ae45a544fc702027f1e4573d94aaaPatch, Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-mx3h-vc7w-r9c6Patch, Third Party Advisory
https://github.com/discourse/discourse/commit/702685b6a06ae45a544fc702027f1e4573d94aaaPatch, Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-mx3h-vc7w-r9c6Patch, Third Party Advisory

Timeline

Published: Jan 5, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-21642?

How severe is CVE-2022-21642?

CVE-2022-21642 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.73% probability of exploitation in the next 30 days.

How do I fix CVE-2022-21642?

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-2022-21642?

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

Scan your code now

Source: NVD / NIST