{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93315","assignerOrgId":"686469e6-3ff6-451b-ab8b-cf5b9e89401e","state":"PUBLISHED","assignerShortName":"Docker","dateReserved":"2026-09-17T17:17:25.321Z","datePublished":"2026-10-05T21:57:08.053Z","dateUpdated":"2026-10-05T21:57:08.053Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","packageName":"github.com/moby/buildkit","platforms":["Linux"],"product":"BuildKit","vendor":"moby","versions":[{"version":"0.31.0","status":"affected","lessThan":"0.33.1","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Zhenchen Wang (Institute of Software, Chinese Academy of Sciences), Shuo Huai, Songlin Zhu, Weijie Liu, and Yan Jia (Nankai University)"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"When proxy networking with CA injection is enabled, a build can modify its CA bundle before cleanup. This may cause cleanup to block, operate outside the build rootfs, or fail without failing the build."}],"value":"When proxy networking with CA injection is enabled, a build can modify its CA bundle before cleanup. This may cause cleanup to block, operate outside the build rootfs, or fail without failing the build."}],"metrics":[{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:L/SA:N","baseScore":5.8,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"LOW","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-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"686469e6-3ff6-451b-ab8b-cf5b9e89401e","shortName":"Docker","dateUpdated":"2026-10-05T21:57:08.053Z"},"references":[{"tags":["vendor-advisory"],"url":"https://github.com/moby/buildkit/security/advisories/GHSA-2f5p-x9ph-g97x"},{"tags":["patch"],"url":"https://github.com/moby/buildkit/releases/tag/v0.33.1"}],"source":{"discovery":"EXTERNAL"},"title":"BuildKit proxy CA cleanup can be disrupted by build steps","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Avoid using build sources from untrusted locations. Only builds enabling proxy networking for exec steps (either via BuildKitd TOML config or Buildx Rego policy) are affected."}],"value":"Avoid using build sources from untrusted locations. Only builds enabling proxy networking for exec steps (either via BuildKitd TOML config or Buildx Rego policy) are affected."}]}}}