Auth bypass in Discourse

CVE-2022-39385

Discourse is the an open source discussion platform. In some rare cases users redeeming an invitation can be added as a participant to several private message topics that they should not be added to. They are not notified of this, it happens transparently in the background. This issue has been resolved in commit `a414520742` and will be included in future releases. Users are advised to upgrade. Users are also advised to set `SiteSetting.max_invites_per_day` to 0 until the patch is installed.

Vulnerability class: Information Disclosure

EPSS: 0.005 (39.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

  • Discourse — versions Beta: <= 2.9.0.beta11, Stable: <= 2.8.10, 2.9.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2022-39385?
CVE-2022-39385 is a medium-severity vulnerability in Discourse, classified under Information Disclosure. CVSS score: 6.5/10. Published 2022-11-14.
How severe is CVE-2022-39385?
Medium severity. CVSS v3 base score is 6.5 out of 10.