CVE-2026-86178

Pixelfed through 0.12.9 Unauthorized Story Access via API

Published Sep 5, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Pixelfed through 0.12.9 Unauthorized Story Access via API
First Time appeared Pixelfed
Pixelfed pixelfed
Weaknesses CWE-862
CPEs cpe:2.3:a:pixelfed:pixelfed:*:*:*:*:*:*:*:*
Vendors & Products Pixelfed
Pixelfed pixelfed
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Sep 24, 2026, 2:21 PM
Reserved
Sep 5, 2026, 10:40 AM
Status
Deferred
Published
Sep 5, 2026, 11:16 AM
Modified
Sep 23, 2026, 5:17 PM