CVE-2021-41082

Name: CVE-2021-41082
Creator: NVD / NIST
Published: 2021-09-20T21:15:07.523+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.73%

Last modified Jun 17, 2026

CVE-2021-41082 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Discourse is a platform for community discussion. In affected versions any private message that includes a group had its title and participating user exposed to users that do not have access to the private messages. EPSS estimates a 1.73% chance of exploitation in the next 30 days.

Description

Discourse is a platform for community discussion. In affected versions any private message that includes a group had its title and participating user exposed to users that do not have access to the private messages. However, access control for the private messages was not compromised as users were not able to view the posts in the leaked private message despite seeing it in their inbox. The problematic commit was reverted around 32 minutes after it was made. Users are encouraged to upgrade to the latest commit if they are running Discourse against the `tests-passed` branch.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.73%

74.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Discourse	Discourse	< 2021-09-14

References

https://github.com/discourse/discourse/commit/27bad28c530c89acab35a56b945b6a3924280f4bPatch, Third Party Advisory
https://github.com/discourse/discourse/commit/ddb458343dc39a7a8c99467dcd809b444514fe2cPatch, Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-vm3x-w6jm-j9vvThird Party Advisory
https://github.com/discourse/discourse/commit/27bad28c530c89acab35a56b945b6a3924280f4bPatch, Third Party Advisory
https://github.com/discourse/discourse/commit/ddb458343dc39a7a8c99467dcd809b444514fe2cPatch, Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-vm3x-w6jm-j9vvThird Party Advisory

Timeline

Published: Sep 20, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-41082?

How severe is CVE-2021-41082?

CVE-2021-41082 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.73% probability of exploitation in the next 30 days.

How do I fix CVE-2021-41082?

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-2021-41082?

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

Scan your code now

Source: NVD / NIST