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CVE-2026-52726

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

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.5 · High · EPSS 0.7% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • dulwich

    Versions
    • >= 0.23.2, < 1.2.5: Affected

    No fix published

  • dulwich Debian:12

    Versions
    • 0.21.2-1
    • 0.21.5-1
    • 0.21.6-1
    • 0.22.5-1
    • 0.22.7-1
    • 0.22.7-2
    • 0.24.10-1
    • 0.24.2-1
    • 0.24.2-2
    • 1.0.0-1
    • 1.0.0-2
    • 1.1.0-1
    • 1.1.0-2
    • 1.1.0-3
    • 1.2.0-1
    • 1.2.1-1
    • 1.2.11-1
    • 1.2.12-1
    • 1.2.5-1
    • 1.2.7-1
    • 1.2.7-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • dulwich Debian:13

    Versions
    • 0.22.7-1
    • 0.22.7-2
    • 0.24.10-1
    • 0.24.2-1
    • 0.24.2-2
    • 1.0.0-1
    • 1.0.0-2
    • 1.1.0-1
    • 1.1.0-2
    • 1.1.0-3
    • 1.2.0-1
    • 1.2.1-1
    • 1.2.11-1
    • 1.2.12-1
    • 1.2.5-1
    • 1.2.7-1
    • 1.2.7-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • dulwich Debian:14

    Versions
    • 0.22.7-1
    • 0.22.7-2
    • 0.24.10-1
    • 0.24.2-1
    • 0.24.2-2
    • 1.0.0-1
    • 1.0.0-2
    • 1.1.0-1
    • 1.1.0-2
    • 1.1.0-3
    • 1.2.0-1
    • 1.2.1-1
    Affected ranges
    • ECOSYSTEM: < 1.2.5-1

    Update to 1.2.5-1

  • dulwich PyPI

    Versions
    • 0.23.2
    • 0.24.0
    • 0.24.1
    • 0.24.10
    • 0.24.2
    • 0.24.3
    • 0.24.4
    • 0.24.5
    • 0.24.6
    • 0.24.7
    • 0.24.8
    • 0.24.9
    • 0.25.0
    • 0.25.1
    • 0.25.2
    • 1.0.0
    • 1.1.0
    • 1.2.0
    • 1.2.1
    • 1.2.2
    • 1.2.3
    • 1.2.4
    Affected ranges
    • ECOSYSTEM: ≥ 0.23.2, < 1.2.5

    Update to 1.2.5

  • dulwich Ubuntu:16.04:LTS

    Versions
    • 0.11.2-1ubuntu1
    • 0.12.0-1
    • 0.12.0-1build1
    • 0.12.0-1build2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • dulwich Ubuntu:18.04:LTS

    Versions
    • 0.18.2-1build1
    • 0.18.5-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • dulwich Ubuntu:20.04:LTS

    Versions
    • 0.19.11-2
    • 0.19.14-4ubuntu1
    • 0.19.15-1
    • 0.19.15-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • dulwich Ubuntu:22.04:LTS

    Versions
    • 0.20.15-1ubuntu1
    • 0.20.31-1ubuntu1
    • 0.20.31-1.1
    • 0.20.31-1.1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • dulwich Ubuntu:24.04:LTS

    Versions
    • 0.21.6-1
    • 0.21.6-1build1
    • 0.21.6-1build2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • dulwich Ubuntu:25.10

    Versions
    • 0.22.7-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • dulwich Ubuntu:26.10

    Versions
    • 1.1.0-3
    • 1.2.12-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • dulwich Ubuntu:26.04:LTS

    Versions
    • 0.22.7-1
    • 0.24.2-2
    • 1.1.0-2ubuntu1
    • 1.1.0-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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