Auth bypass in Pixelfed
CVE-2026-93960
A vulnerability was identified in Pixelfed up to 0.12.11. Impacted is the function instancePeers of the file app/Http/Controllers/Api/ApiV1Controller.php of the component OAuth Scope Handler. Such manipulation of the argument ID leads to missing authentication. The attack may be performed from remote. The exploit is publicly available and might be used. Upgrading to version 0.12.10 is recommended to address this issue. The name of the patch is 68dca5097305fa0065d029587b2233524636025a. Upgrading the affected component is advised.
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:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.006 (47.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Pixelfed — versions 0.12.0, 0.12.1, 0.12.10
Weakness classification (CWE)
References
- vuldb.com/vuln/407919 (technical-description, vdb-entry)
- vuldb.com/vuln/407919/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-93960 (third-party-advisory)
- vuldb.com/submit/944207 (third-party-advisory)
- github.com/pixelfed/pixelfed/issues/6643 (issue-tracking, exploit)
- github.com/pixelfed/pixelfed/pull/6774 (issue-tracking, patch)
- github.com/pixelfed/pixelfed/commit/68dca5097305fa0065d029587b2233524636025a (patch)
- github.com/pixelfed/pixelfed/releases/tag/v0.12.10 (patch)
- github.com/pixelfed/pixelfed/ (product)
Frequently asked questions
- What is CVE-2026-93960?
- CVE-2026-93960 is a medium-severity vulnerability in Pixelfed, classified under Improper Authentication. CVSS score: 4.3/10. Published 2026-09-20.
- How severe is CVE-2026-93960?
- Medium severity. CVSS v3 base score is 4.3 out of 10.