CVE-2026-93960
MediumCVSS 4.3Summary
Vulnerability in Pixelfed up to 0.12.11 affects the instancePeers function in app/Http/Controllers/Api/ApiV1Controller.php of the OAuth Scope Handler component. Manipulation of the ID argument leads to missing authentication. The attack can be remote, and the exploit is public. Upgrading to 0.12.10 is recommended (though description says 0.12.11, recommended is 0.12.10 – likely a typo).
Risk Assessment
Missing authentication could allow unauthorized access to data or API functions, threatening user privacy.
Recommendation
Upgrade Pixelfed to version 0.12.10 or later if available, and monitor for patches.
Other vulnerabilities in Pixelfed
See all- CVE-2026-86178Medium
Pixelfed through 0.12.9 fails to validate follower status in StoryComposeController react and comment endpoints, allowing authenticated users to access follower-only stories. Attackers can enumerate sequential story IDs and submit reactions or comments to retrieve story media URLs and author information without following the account.
- CVE-2026-71246Medium
Pixelfed's SearchController (behind the auth middleware) accepts a URL via its remote-search parameters and fetches it server-side through ActivityPubFetchService, whose validateUrl only blocks the literal hosts 127.0.0.1, localhost, and ::1 and requires https, without checking the resolved IP against private, internal, or link-local ranges (e.g. 169.254.169.254).
Original NVD description (English source)
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.