CVE-2026-86178 | BDVDB-2026-368563 Detail
pixelfedpixelfed
Description#
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.
Impact#
Per CVSS v3.1: confidentiality impact low, integrity impact low, availability impact none. Attack vector: network.
Weaknesses#
- CWE-862 Missing Authorization
References#
- https://github.com/geo-chen/oss/blob/main/Pixelfed.md
- https://github.com/pixelfed/pixelfed/blob/v0.12.9/app/Http/Controllers/StoryComposeController.php#L487-L501
- https://github.com/pixelfed/pixelfed/blob/v0.12.9/app/Http/Controllers/StoryComposeController.php#L566-L580
- https://github.com/pixelfed/pixelfed/blob/v0.12.9/routes/web-api.php#L154-L155
- https://github.com/pixelfed/pixelfed
- https://www.vulncheck.com/advisories/pixelfed-through-0.12.9-unauthorized-story-access-via-api
Exploit#
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.