{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-42563/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-12T03:55:30.892Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-42563","@id":"https://www.cve.org/CVERecord?id=CVE-2026-42563","description":"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 "},"products":[{"@id":"cpe:2.3:a:jelmer:dulwich:\\>\\=_0.24.0\\,_\\<_1.2.5:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:jelmer:dulwich:\\>\\=_0.24.0\\,_\\<_1.2.5:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"No fixed version is published yet; monitor the upstream advisory.","timestamp":"2026-06-12T03:55:30.892Z"}]}