CVE-2026-86178
mediumPixelfed through 0.12.9 fails to validate follower status in StoryComposeController react and comment endpoints, allowing authenticated users to access followe…
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.
CVSS
5.4
5.4 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-09-05 11:16
Modified: 2026-09-23 17:17
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-10-27 06:50 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/geo-chen/oss/blob/main/Pixelfed.md disclosure@vulncheck.com
- https://github.com/pixelfed/pixelfed disclosure@vulncheck.com
- https://github.com/pixelfed/pixelfed/blob/v0.12.9/app/Http/Controllers/StoryComposeControl... disclosure@vulncheck.com
- https://github.com/pixelfed/pixelfed/blob/v0.12.9/app/Http/Controllers/StoryComposeControl... disclosure@vulncheck.com
- https://github.com/pixelfed/pixelfed/blob/v0.12.9/routes/web-api.php#L154-L155 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/pixelfed-through-0.12.9-unauthorized-story-access-via... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:50 UTC · record ↗