CVE-2026-93960: Missing Authentication in Pixelfed
CVE-2026-93960 is a medium severity vulnerability in Pixelfed up to version 0.12.11 affecting the OAuth Scope Handler component. It involves missing authentication in the instancePeers function of the ApiV1Controller.php file, allowing remote attackers to manipulate an argument leading to unauthorized access. A patch is available and upgrading to version 0.12.10 or later is recommended to mitigate this issue.
AI Analysis
Technical Summary
This vulnerability affects Pixelfed versions 0.12.0 through 0.12.11 in the OAuth Scope Handler component, specifically in the instancePeers function within app/Http/Controllers/Api/ApiV1Controller.php. The flaw allows remote attackers to manipulate the argument ID, resulting in missing authentication checks. Exploit code is publicly available, and the vulnerability has a CVSS 4.0 base score of 5.3 (medium severity). The issue is addressed by a patch identified by commit 68dca5097305fa0065d029587b2233524636025a. Users are advised to upgrade to version 0.12.10 or later to remediate the vulnerability.
Potential Impact
The vulnerability enables remote attackers to bypass authentication in the affected Pixelfed component, potentially allowing unauthorized access to functionality protected by OAuth scopes. This could lead to unauthorized information disclosure or actions within the application context. The CVSS score of 5.3 reflects a medium impact with no user interaction required and low attack complexity.
Mitigation Recommendations
A fix is available. Users should upgrade Pixelfed to version 0.12.10 or later, which includes the patch 68dca5097305fa0065d029587b2233524636025a addressing this missing authentication vulnerability. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-93960: Missing Authentication in Pixelfed
Description
CVE-2026-93960 is a medium severity vulnerability in Pixelfed up to version 0.12.11 affecting the OAuth Scope Handler component. It involves missing authentication in the instancePeers function of the ApiV1Controller.php file, allowing remote attackers to manipulate an argument leading to unauthorized access. A patch is available and upgrading to version 0.12.10 or later is recommended to mitigate this issue.
CVSS v4.0
Score 5.3medium
Affected software
Pixelfed
pkg:github/pixelfed/pixelfedcpe:2.3:a:pixelfed:pixelfed:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects Pixelfed versions 0.12.0 through 0.12.11 in the OAuth Scope Handler component, specifically in the instancePeers function within app/Http/Controllers/Api/ApiV1Controller.php. The flaw allows remote attackers to manipulate the argument ID, resulting in missing authentication checks. Exploit code is publicly available, and the vulnerability has a CVSS 4.0 base score of 5.3 (medium severity). The issue is addressed by a patch identified by commit 68dca5097305fa0065d029587b2233524636025a. Users are advised to upgrade to version 0.12.10 or later to remediate the vulnerability.
Potential Impact
The vulnerability enables remote attackers to bypass authentication in the affected Pixelfed component, potentially allowing unauthorized access to functionality protected by OAuth scopes. This could lead to unauthorized information disclosure or actions within the application context. The CVSS score of 5.3 reflects a medium impact with no user interaction required and low attack complexity.
Mitigation Recommendations
A fix is available. Users should upgrade Pixelfed to version 0.12.10 or later, which includes the patch 68dca5097305fa0065d029587b2233524636025a addressing this missing authentication vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-09-19T09:16:56.504Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aaf53b755bf5e2cf57dd1c0
Added to database: 09/20/2026, 03:32:07 UTC
Last enriched: 09/20/2026, 03:46:34 UTC
Last updated: 09/20/2026, 05:25:57 UTC
Views: 8
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