CVEvulnerability
CVE-2026-86178
5.3 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2026-09-05
- Last modified
- 2026-09-23
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 5.3 MEDIUM — CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 5.4 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- Weaknesses
- CWE-862
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.
Related
Weakness · CWE (1)
- CWE-862 Missing Authorization weakness
References
- https://github.com/geo-chen/oss/blob/main/Pixelfed.md github.com
- https://github.com/pixelfed/pixelfed github.com
- https://github.com/pixelfed/pixelfed/blob/v0.12.9/app/Http/Controllers/StoryComposeController.php#L487-L501 github.com
- https://github.com/pixelfed/pixelfed/blob/v0.12.9/app/Http/Controllers/StoryComposeController.php#L566-L580 github.com
- https://github.com/pixelfed/pixelfed/blob/v0.12.9/routes/web-api.php#L154-L155 github.com
- https://www.vulncheck.com/advisories/pixelfed-through-0.12.9-unauthorized-story-access-via-api www.vulncheck.com