Auth bypass in Friendsofflarum Byobu
CVE-2022-35921
fof/byobu is a private discussions extension for Flarum forum. Affected versions were found to not respect private discussion disablement by users. Users of Byobu should update the extension to version 1.1.7, where this has been patched. Users of Byobu with Flarum 1.0 or 1.1 should upgrade to Flarum 1.2 or later, or evaluate the impact this issue has on your forum's users and choose to disable the extension if needed. There are no workarounds for this issue.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (41.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Friendsofflarum Byobu — versions 0.30.0, >=0.3.0-beta.2, < 1.1.7
Weakness classification (CWE)
References
- github.com/FriendsOfFlarum/byobu/security/advisories/GHSA-6gjm-6wj6-4px5 (Third Party Advisory)
- github.com/FriendsOfFlarum/byobu/commit/23dcf93a30f948d30c678a96681f7fdefeba5171 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-35921?
- CVE-2022-35921 is a low-severity vulnerability in Friendsofflarum Byobu, classified under Improper Privilege Management. CVSS score: 3.5/10. Published 2022-08-01.
- How severe is CVE-2022-35921?
- Low severity. CVSS v3 base score is 3.5 out of 10.