CVE-2021-41082
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.79%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.79% probability · 77th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200, CWE-863
- Affected
- discourse/discourse
- Source
- security-advisories@github.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.