Information disclosure in Discourse
CVE-2021-43792
Discourse is an open source discussion platform. In affected versions a vulnerability affects users of tag groups who use the "Tags are visible only to the following groups" feature. A tag group may only allow a certain group (e.g. staff) to view certain tags. Users who were tracking or watching the tags via /preferences/tags, then have their staff status revoked will still see notifications related to the tag, but will not see the tag on each topic. This issue has been patched in stable version 2.7.11. Users are advised to upgrade as soon as possible.
Vulnerability class: Information Disclosure
EPSS: 0.008 (53.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Discourse — versions stable < 2.7.11, tests-passed < 2.8.0.beta9, 2.8.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-43792?
- CVE-2021-43792 is a medium-severity vulnerability in Discourse, classified under Information Disclosure. CVSS score: 4.3/10. Published 2021-12-01.
- How severe is CVE-2021-43792?
- Medium severity. CVSS v3 base score is 4.3 out of 10.