{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42563","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-28T17:26:12.083Z","datePublished":"2026-06-10T21:47:14.927Z","dateUpdated":"2026-06-12T03:55:30.892Z"},"containers":{"cna":{"title":"Dulwich Vulnerable to Command Injection via Merge Driver Path","problemTypes":[{"descriptions":[{"cweId":"CWE-78","lang":"en","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/jelmer/dulwich/security/advisories/GHSA-9277-mp7x-85jf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/jelmer/dulwich/security/advisories/GHSA-9277-mp7x-85jf"},{"name":"https://github.com/jelmer/dulwich/commit/e3331b3b3a122fc313460182f928f59723580b7b","tags":["x_refsource_MISC"],"url":"https://github.com/jelmer/dulwich/commit/e3331b3b3a122fc313460182f928f59723580b7b"},{"name":"https://github.com/jelmer/dulwich/releases/tag/dulwich-1.2.5","tags":["x_refsource_MISC"],"url":"https://github.com/jelmer/dulwich/releases/tag/dulwich-1.2.5"}],"affected":[{"vendor":"jelmer","product":"dulwich","versions":[{"version":">= 0.24.0, < 1.2.5","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-06-10T21:47:14.927Z"},"descriptions":[{"lang":"en","value":"Dulwich is a pure-Python implementation of the Git file formats and protocols. Starting in version 0.24.0 and prior to version 1.2.5, Dulwich's `ProcessMergeDriver` substitutes the file path (from the git tree, controllable by an attacker via a malicious branch) into the merge driver command via the `%P` placeholder and executes it with `subprocess.run(..., shell=True)`. An attacker who can cause a victim to merge an untrusted branch can achieve arbitrary command execution by crafting malicious file paths. Version 1.2.5 fixes the issue."}],"source":{"advisory":"GHSA-9277-mp7x-85jf","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/jelmer/dulwich/security/advisories/GHSA-9277-mp7x-85jf","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-11T00:00:00+00:00","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-42563"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-12T03:55:30.892Z"}}]}}