CVE-2026-121522
Published:November 03, 2026
Updated:November 04, 2026
In BuildKit versions v0.26.0 through v0.34.1, a specific build definition that resolves metadata for the same Git source reference twice can cause the BuildKit daemon to panic and crash, interrupting builds handled by that daemon. The issue is fixed in v0.34.2.
Affected Packages
https://github.com/moby/buildkit.git (GITHUB):
Affected version(s) >=v0.26.0-rc1 <v0.34.2Fix Suggestion:
Update to version v0.34.2github.com/moby/buildkit (GO):
Affected version(s) >=v0.26.0-rc1 <v0.34.2Fix Suggestion:
Update to version v0.34.2Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.7
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
ACTIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.5
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
NULL Pointer Dereference