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TI-2026-58967 Aliases CVE-2026-86178GHSA-cxpc-p44g-hxj7

Pixelfed through 0.12.9 Unauthorized Story Access via API

Priority LOW 24CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0032 25th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
pixelfedpixelfedup to 0.12.9—No fix listedCNA
  • pixelfed Vendorpixelfed Affected up to 0.12.9 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-86178
  2. 2026-10-03 Alias added: GHSA-cxpc-p44g-hxj7

References

Exploit 1

Other 4

  • TI-2024-16563 Insufficient authorization allowing elevated access to resources in pixelfed CVSS 3.1CRITICAL 9.9
  • TI-2023-00853 Exposure of Sensitive Information to an Unauthorized Actor in pixelfed/pixelfed CVSS 3.1MEDIUM 5.3
  • TI-2023-00866 Improper Authorization in pixelfed/pixelfed CVSS 3.1MEDIUM 5.3
  • TI-2026-49916 Pixelfed - Authenticated SSRF via Remote URL Search CVSS 3.1MEDIUM 4.3
  • TI-2025-22012 Incorrect authorization in Pixelfed CVSS 3.1MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences