Vulnerability record · CVE-2026-93321 · published 5 October 2026

CVE-2026-93321: A malicious frontend can submit an LLB definition that causes buildkitd to panic and terminate, interrupting a…

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

6.9 CVSS 4.0 Medium CWE-129 · CWE-129 Awaiting Analysis

6.9CVSS 4.0 base score

-EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

2References

6 Oct 2026Last modified by NVD

Description

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

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

Link	Tags
https://github.com/moby/buildkit/releases/tag/v0.33.1
https://github.com/moby/buildkit/security/advisories/GHSA-fjj4-h6vf-m9hj

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2022-48503Apple WebKit bounds check flaw allows code execution via web contentApple fixed an insufficient bounds-checking issue in WebKit across Safari, iOS, iPadOS, macOS, tvOS and watchOS. Processing malicious web content can…KEVEPSS 3.2%analysed14 Aug 2023

Source: NIST National Vulnerability Database (record CVE-2026-93321), CISA KEV, FIRST EPSS. This page is refreshed as NVD updates the record.