{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-52726: Dulwich's submodule path traversal in porcelain.submodule_update / porcelain.clone(recurse_submodules=True) yields RCE via attacker-dropped .git/hooks payload","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-52726","status":"final","version":"1","initial_release_date":"2026-06-10T22:13:33.320Z","current_release_date":"2026-06-11T12:55:09.309Z","revision_history":[{"date":"2026-06-10T22:13:33.320Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Dulwich is a pure-Python implementation of the Git file formats and protocols. Starting in version 0.23.2 and prior to version 1.2.5, `dulwich.porcelain.submodule_update`, and by extension `porcelain.clone(..., recurse_submodules=True)`, materializes attacker-controlled submodule paths from a crafted upstream repository without path validation. A malicious `.gitmodules` plus a matching tree gitlink whose `path` is `.git/hooks` (or any other directory inside the parent repository's `.git` directory) causes the attacker's submodule tree contents to be written directly into the victim's `.git/hooks/` directory, preserving executable mode bits. The dropped executables are then run by any subsequent `git` or `dulwich` command that invokes the matching hook, resulting in arbitrary code execution. This is the dulwich equivalent of the upstream Git fixes for CVE-2024-32002 / CVE-2024-32004, which were never propagated into dulwich's separately implemented submodule porcelain. Version 1.2.5 patches the issue.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-52726 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-52726"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-52726"},{"category":"external","summary":"https://github.com/jelmer/dulwich/security/advisories/GHSA-gfhv-vqv2-4544","url":"https://github.com/jelmer/dulwich/security/advisories/GHSA-gfhv-vqv2-4544"},{"category":"external","summary":"https://github.com/jelmer/dulwich/releases/tag/dulwich-1.2.5","url":"https://github.com/jelmer/dulwich/releases/tag/dulwich-1.2.5"}]},"product_tree":{"branches":[{"category":"vendor","name":"jelmer","branches":[{"category":"product_name","name":"dulwich","branches":[{"category":"product_version","name":">= 0.23.2, < 1.2.5","product":{"name":"jelmer dulwich >= 0.23.2, < 1.2.5","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:jelmer:dulwich:\\>\\=_0.23.2\\,_\\<_1.2.5:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-52726","title":"Dulwich's submodule path traversal in porcelain.submodule_update / porcelain.clone(recurse_submodules=True) yields RCE via attacker-dropped .git/hooks payload","notes":[{"category":"description","text":"Dulwich is a pure-Python implementation of the Git file formats and protocols. Starting in version 0.23.2 and prior to version 1.2.5, `dulwich.porcelain.submodule_update`, and by extension `porcelain.clone(..., recurse_submodules=True)`, materializes attacker-controlled submodule paths from a crafted upstream repository without path validation. A malicious `.gitmodules` plus a matching tree gitlink whose `path` is `.git/hooks` (or any other directory inside the parent repository's `.git` directory) causes the attacker's submodule tree contents to be written directly into the victim's `.git/hooks/` directory, preserving executable mode bits. The dropped executables are then run by any subsequent `git` or `dulwich` command that invokes the matching hook, resulting in arbitrary code execution. This is the dulwich equivalent of the upstream Git fixes for CVE-2024-32002 / CVE-2024-32004, which were never propagated into dulwich's separately implemented submodule porcelain. Version 1.2.5 patches the issue.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}