{"id":"CVE-2026-93322","state":"PUBLISHED","title":"Malformed MergeOp can crash the BuildKit daemon","description":"A malicious frontend can submit an LLB definition that causes buildkitd\nto panic and terminate, interrupting all builds running on that daemon.","publishedAt":"2026-10-05T17:53:50.583Z","updatedAt":"2026-10-05T18:51:34.926Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"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","source":"Docker"},"assigner":"Docker","products":["moby BuildKit"],"affected":[{"vendor":"moby","product":"BuildKit","packageName":"github.com/moby/buildkit","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.33.0","versionType":"semver"}]}],"references":["https://github.com/moby/buildkit/security/advisories/GHSA-cv6p-7w7g-xjwq","https://github.com/moby/buildkit/releases/tag/v0.33.1"],"weaknesses":["CWE-129"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93322.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93322","state":"PUBLISHED","datePublished":"2026-10-05T17:53:50.583Z","dateUpdated":"2026-10-05T18:51:34.926Z","assignerShortName":"Docker","assignerOrgId":"686469e6-3ff6-451b-ab8b-cf5b9e89401e","dateReserved":"2026-09-17T17:18:09.497Z"},"containers":{"cna":{"title":"Malformed MergeOp can crash the BuildKit daemon","descriptions":[{"lang":"en","value":"A malicious frontend can submit an LLB definition that causes buildkitd\nto panic and terminate, interrupting all builds running on that daemon."}],"affected":[{"vendor":"moby","product":"BuildKit","packageName":"github.com/moby/buildkit","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.33.0","versionType":"semver"}]}],"references":[{"url":"https://github.com/moby/buildkit/security/advisories/GHSA-cv6p-7w7g-xjwq","tags":["vendor-advisory"]},{"url":"https://github.com/moby/buildkit/releases/tag/v0.33.1","tags":["patch"]}],"metrics":[{"cvssV4_0":{"version":"4.0","vectorString":"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","baseScore":6.9,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","exploitMaturity":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-129","description":"CWE-129: Improper Validation of Array Index","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"Docker","orgId":"686469e6-3ff6-451b-ab8b-cf5b9e89401e","dateUpdated":"2026-10-05T17:53:50.583Z"},"credits":[{"lang":"en","type":"finder","value":"Haoxiang Yan (https://github.com/Yanhaoxi)"}],"source":{"discovery":"EXTERNAL"},"workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Avoid using external BuildKit frontends from untrusted sources. Dockerfile builds are unaffected.</p>"}],"value":"Avoid using external BuildKit frontends from untrusted sources. Dockerfile builds are unaffected."}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-05T18:48:11.979709Z","id":"CVE-2026-93322","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-05T18:51:34.926Z"}}]}}}