CVE-2026-93321CWE-129

CVE-2026-93321

published October 6, 2026

CVSS
6.9
EPSS
0%
Percentile
4.3
In the wild
Unconfirmed
What it is

A malicious frontend can submit an LLB definition that causes buildkitd

to panic and terminate, interrupting all builds running on that daemon.

The record
Technical detail
CVSS
6.9 · NONE
CVSS v4.0
6.9 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00155 · 4.3th percentile
Weakness
CWE-129 · Improper Validation of Array Index
Published
2026-10-06T02:16Z
References (2)
https://github.com/moby/buildkit/releases/tag/v0.33.1 · [email protected]https://github.com/moby/buildkit/security/advisories/GHSA-fjj4-h6vf-m9hj · [email protected]
EPSS history
Timeline
  • 07 OCT 03:43Z
    EPSS moved — → 0%
    epss
  • 05 OCT 22:00Z
    Malformed LLB file operation can crash buildkitd
    cvelistv5