Auth bypass in Joinmastodon Mastodon
CVE-2022-48364
The undo_mark_statuses_as_sensitive method in app/services/approve_appeal_service.rb in Mastodon 3.5.x before 3.5.3 does not use the server's representative account, resulting in moderator identity disclosure when a moderator approves the appeal of a user whose status update was marked as sensitive.
Vulnerability class: Broken Authentication
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.007 (50.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/mastodon/mastodon/pull/18525 (Patch)
- github.com/mastodon/mastodon/compare/v3.5.2...v3.5.3 (Product, Patch)
- github.com/40826d/advisories/blob/master/CVE-2022-48364/README.md (Exploit, Third Party Advisory)
- github.com/mastodon/mastodon/blob/main/CHANGELOG.md (Release Notes)
Frequently asked questions
- What is CVE-2022-48364?
- CVE-2022-48364 is a medium-severity vulnerability in Joinmastodon Mastodon, classified under Improper Authentication. CVSS score: 4.3/10. Published 2023-03-06.
- How severe is CVE-2022-48364?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2022-48364 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.