{"api_version":"1","generated_at":"2026-05-12T18:11:34+00:00","cve":"CVE-2026-42603","urls":{"html":"https://cve.report/CVE-2026-42603","api":"https://cve.report/api/cve/CVE-2026-42603.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-42603","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-42603"},"summary":{"title":"OWASP BLT: pre-commit-fix.yaml executes untrusted fork code via pull_request_target","description":"OWASP BLT is a QA testing and vulnerability disclosure platform that encompasses websites, apps, git repositories, and more. Prior to 2.1.2, .github/workflows/pre-commit-fix.yaml uses pull_request_target (privileged trigger) but checks out and executes code directly from the attacker's fork, enabling RCE with write permissions. This vulnerability is fixed in 2.1.2.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-05-11 17:16:33","updated_at":"2026-05-11 18:16:35"},"problem_types":["CWE-94","CWE-95","CWE-94 CWE-94: Improper Control of Generation of Code ('Code Injection')","CWE-95 CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"8.8","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"8.8","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://github.com/OWASP-BLT/BLT/security/advisories/GHSA-cgvj-qg2h-cqfh","name":"https://github.com/OWASP-BLT/BLT/security/advisories/GHSA-cgvj-qg2h-cqfh","refsource":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-42603","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42603","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"OWASP-BLT","product":"BLT","version":"affected < 2.1.2","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-42603","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2026-05-11T17:27:52.116751Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-05-11T17:27:55.699Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"references":[{"tags":["exploit"],"url":"https://github.com/OWASP-BLT/BLT/security/advisories/GHSA-cgvj-qg2h-cqfh"}],"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"BLT","vendor":"OWASP-BLT","versions":[{"status":"affected","version":"< 2.1.2"}]}],"descriptions":[{"lang":"en","value":"OWASP BLT is a QA testing and vulnerability disclosure platform that encompasses websites, apps, git repositories, and more. Prior to 2.1.2, .github/workflows/pre-commit-fix.yaml uses pull_request_target (privileged trigger) but checks out and executes code directly from the attacker's fork, enabling RCE with write permissions. This vulnerability is fixed in 2.1.2."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-95","description":"CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-05-11T16:11:55.297Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/OWASP-BLT/BLT/security/advisories/GHSA-cgvj-qg2h-cqfh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/OWASP-BLT/BLT/security/advisories/GHSA-cgvj-qg2h-cqfh"}],"source":{"advisory":"GHSA-cgvj-qg2h-cqfh","discovery":"UNKNOWN"},"title":"OWASP BLT: pre-commit-fix.yaml executes untrusted fork code via pull_request_target"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-42603","datePublished":"2026-05-11T16:11:55.297Z","dateReserved":"2026-04-29T00:31:15.725Z","dateUpdated":"2026-05-11T17:27:55.699Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-11 17:16:33","lastModifiedDate":"2026-05-11 18:16:35","problem_types":["CWE-94","CWE-95","CWE-94 CWE-94: Improper Control of Generation of Code ('Code Injection')","CWE-95 CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"42603","Ordinal":"1","Title":"OWASP BLT: pre-commit-fix.yaml executes untrusted fork code via ","CVE":"CVE-2026-42603","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"42603","Ordinal":"1","NoteData":"OWASP BLT is a QA testing and vulnerability disclosure platform that encompasses websites, apps, git repositories, and more. Prior to 2.1.2, .github/workflows/pre-commit-fix.yaml uses pull_request_target (privileged trigger) but checks out and executes code directly from the attacker's fork, enabling RCE with write permissions. This vulnerability is fixed in 2.1.2.","Type":"Description","Title":"OWASP BLT: pre-commit-fix.yaml executes untrusted fork code via "}]}}}