CVE-2026-93321

MEDIUM CVSS 4.0: 6.9 EPSS 0.15%
Updated Oct 06, 2026
Moby
Parameter Value
CVSS 6.9 (MEDIUM)
Type CWE-129 (Improper Validation of Array Index)
Vendor Moby
Public PoC No

A malicious frontend can submit an LLB definition that causes buildkitd to panic and terminate, interrupting all builds running on that daemon.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Vulnerable Products

moby:buildkit