{"api_version":"1","generated_at":"2026-11-04T16:24:10+00:00","cve":"CVE-2026-121522","urls":{"html":"https://cve.report/CVE-2026-121522","api":"https://cve.report/api/cve/CVE-2026-121522.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-121522","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-121522"},"summary":{"title":"Possible panic from Git source resolver","description":"In BuildKit versions v0.26.0 through v0.34.1, a specific build definition that resolves metadata for the same Git source reference twice can cause the BuildKit daemon to panic and crash, interrupting builds handled by that daemon. The issue is fixed in v0.34.2.","state":"PUBLISHED","assigner":"Docker","published_at":"2026-11-03 22:19:46","updated_at":"2026-11-03 22:19:46"},"problem_types":["CWE-476","CWE-476 CWE-476: NULL Pointer Dereference"],"metrics":[{"version":"4.0","source":"security@docker.com","type":"Secondary","score":"6.7","severity":"MEDIUM","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/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:X/V:X/RE:X/U:X","data":{"version":"4.0","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/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:X/V:X/RE:X/U:X","baseScore":6.7,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}},{"version":"4.0","source":"CNA","type":"CVSS","score":"6.7","severity":"MEDIUM","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","data":{"baseScore":6.7,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"url":"https://github.com/moby/buildkit/security/advisories/GHSA-2fqp-xg6f-v7gj","name":"https://github.com/moby/buildkit/security/advisories/GHSA-2fqp-xg6f-v7gj","refsource":"security@docker.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-121522","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121522","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"moby","product":"BuildKit","version":"affected 0.26.0 0.34.2 semver","platforms":[]}],"timeline":[],"solutions":[{"source":"CNA","title":"","value":"Upgrade BuildKit to v0.34.2 or later.","time":"","lang":"en"}],"workarounds":[{"source":"CNA","title":"","value":"Avoid untrusted build definitions. Only specific builds using Git dependencies trigger this issue.","time":"","lang":"en"}],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","packageName":"github.com/moby/buildkit","product":"BuildKit","vendor":"moby","versions":[{"lessThan":"0.34.2","status":"affected","version":"0.26.0","versionType":"semver"}]}],"descriptions":[{"lang":"en","value":"In BuildKit versions v0.26.0 through v0.34.1, a specific build definition that resolves metadata for the same Git source reference twice can cause the BuildKit daemon to panic and crash, interrupting builds handled by that daemon. The issue is fixed in v0.34.2."}],"metrics":[{"cvssV4_0":{"baseScore":6.7,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"format":"CVSS","scenarios":[{"lang":"en","value":"Attacker-controlled build input processed by a user"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","description":"CWE-476: NULL Pointer Dereference","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-11-03T22:09:29.028Z","orgId":"686469e6-3ff6-451b-ab8b-cf5b9e89401e","shortName":"Docker"},"references":[{"tags":["vendor-advisory"],"url":"https://github.com/moby/buildkit/security/advisories/GHSA-2fqp-xg6f-v7gj"}],"solutions":[{"lang":"en","value":"Upgrade BuildKit to v0.34.2 or later."}],"source":{"discovery":"INTERNAL"},"title":"Possible panic from Git source resolver","workarounds":[{"lang":"en","value":"Avoid untrusted build definitions. Only specific builds using Git dependencies trigger this issue."}]}},"cveMetadata":{"assignerOrgId":"686469e6-3ff6-451b-ab8b-cf5b9e89401e","assignerShortName":"Docker","cveId":"CVE-2026-121522","datePublished":"2026-11-03T22:09:29.028Z","dateReserved":"2026-11-03T14:27:34.585Z","dateUpdated":"2026-11-03T22:09:29.028Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-11-03 22:19:46","lastModifiedDate":"2026-11-03 22:19:46","problem_types":["CWE-476","CWE-476 CWE-476: NULL Pointer Dereference"],"metrics":{"cvssMetricV40":[{"source":"security@docker.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/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:X/V:X/RE:X/U:X","baseScore":6.7,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"121522","Ordinal":"1","Title":"Possible panic from Git source resolver","CVE":"CVE-2026-121522","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"121522","Ordinal":"1","NoteData":"In BuildKit versions v0.26.0 through v0.34.1, a specific build definition that resolves metadata for the same Git source reference twice can cause the BuildKit daemon to panic and crash, interrupting builds handled by that daemon. The issue is fixed in v0.34.2.","Type":"Description","Title":"Possible panic from Git source resolver"}]}}}