Missing Authentication Vulnerability in Pixelfed OAuth Scope Handler
CVE-2026-93960

5.3MEDIUM

Key Information:

Vendor

Pixelfed

Status
Pixelfed
Vendor
CVE Published:
20 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-93960?

A missing authentication vulnerability has been identified in the Pixelfed application, specifically within the OAuth Scope Handler's instancePeers function. This flaw allows an attacker to manipulate the argument ID, potentially leading to unauthorized access. The issue can be exploited remotely, making it crucial for users to implement the latest patch. Users are strongly advised to upgrade to version 0.12.10, which addresses this vulnerability with patch 68dca5097305fa0065d029587b2233524636025a. Publicly available exploits indicate the urgency of this update.

Affected Version(s)

Pixelfed 0.12.0

Pixelfed 0.12.1

Pixelfed 0.12.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-93960 - Proof of Concept

References

https://vuldb.com/vuln/407919
vdb-entrytechnical-description
https://vuldb.com/vuln/407919/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-93960
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

geochen (VulDB User)
.