CVE-2026-86178 (GCVE-0-2026-86178)

Vulnerability from cvelistv5 – Published: 2026-09-05 11:01 – Updated: 2026-09-24 14:21
VLAI
Title
Pixelfed through 0.12.9 Unauthorized Story Access via API
Summary
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.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 17:20 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6843 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
pixelfed pixelfed Affected: 0 , ≤ 0.12.9 (semver)
    cpe:2.3:a:pixelfed:pixelfed:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-05 00:00
Credits
George Chen
Show details on NVD website
To clipboard 

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