CVE-2026-93323
Published:October 05, 2026
Updated:October 11, 2026
The Dockerfile frontend loaded the Dockerfile and .dockerignore files of a build context into memory without a size limit. A build context containing an oversized file could make buildkitd allocate memory proportional to that file, potentially exhausting memory and terminating the daemon, which interrupts other builds on the same instance. Fixed by rejecting such files above 16 MiB.
Affected Packages
https://github.com/moby/buildkit.git (GITHUB):
Affected version(s) >=v0.3.0 <v0.33.1Fix Suggestion:
Update to version v0.33.1https://github.com/moby/buildkit.git (GITHUB):
Affected version(s) >=dockerfile/0.9.0 <dockerfile/1.27.1Fix Suggestion:
Update to version dockerfile/1.27.1github.com/moby/buildkit (GO):
Affected version(s) >=v0.33.0-rc2 <v0.33.1Fix Suggestion:
Update to version v0.33.1Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.8
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
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
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Memory Allocation with Excessive Size Value
EPSS
Base Score:
0.11