CVE-2026-57886

MEDIUM CVSS 3.1: 5.9 EPSS 0.25%
Updated Aug 14, 2026
Cross-repository
Parameter Value
CVSS 5.9 (MEDIUM)
Type CWE-639 (Authorization Bypass), CWE-862 (Missing Authorization)
Vendor Cross-repository
Public PoC No

Cross-repository issue/comment attachment re-linking can expose private attachment content

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v3.1