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    8 vulnerabilities by pdm-project

    CVE-2026-47781 (GCVE-0-2026-47781)

    Vulnerability from nvd – Published: 2026-08-04 18:42 – Updated: 2026-08-05 13:48
    VLAI
    Title
    pdm: Project-Controlled `.pdm-plugins` Content Executes Before CLI Parsing
    Summary
    PDM is a Python package and dependency manager. In versions up to and including 2.26.9, PDM automatically loads project-local plugins from a .pdm-plugins directory during initialization, allowing an attacker-controlled file in an untrusted repository checkout to execute arbitrary Python code before any command is parsed. This happens because load_plugins() runs during Core.init() and adds .pdm-plugins via site.addsitedir(), which processes .pth files and immediately executes any line beginning with import, so the code runs with the privileges of the user invoking pdm and even a benign command such as pdm --version triggers it (making the impact strongest in CI, automation, and privileged contexts). The issue is fixed in version 2.27.0.
    Severity
    8.4 (High)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
    • CWE-94 - Improper Control of Generation of Code ('Code Injection')
    Assigner
    References
    Impacted products
    Vendor Product Version
    pdm-project pdm Affected: < 2.27.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-47764 (GCVE-0-2026-47764)

    Vulnerability from nvd – Published: 2026-08-04 17:57 – Updated: 2026-08-05 13:47
    VLAI
    Title
    pdm: Path traversal in wheel installation via overridden write_to_fs
    Summary
    pdm is a Python package and dependency manager supporting the latest PEP standards. Versions prior to 2.27.0 are vulnerable to path traversal through write_to_fs. InstallDestination.write_to_fs() in src/pdm/installers/installers.py overrides the base class to add symlink/hardlink support but replaces the safe _path_with_destdir() (which validates via Path.resolve() + is_relative_to()) with a bare os.path.join() that performs no path validation. A malicious wheel with traversal entries can write arbitrary files. This issue has been fixed in version 2.27.0.
    Severity
    8.4 (High)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Assigner
    References
    Impacted products
    Vendor Product Version
    pdm-project pdm Affected: < 2.27.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-47763 (GCVE-0-2026-47763)

    Vulnerability from nvd – Published: 2026-08-04 17:29 – Updated: 2026-08-05 15:00
    VLAI
    Title
    pdm: Project-Local State and Config Writes Follow Symlinks
    Summary
    pdm is a Python package and dependency manager supporting the latest PEP standards. In versions prior to 2.27.0, pdm writes several project-local state or configuration files without symlink protection. If a malicious repository places those files as symlinks, local PDM operations can overwrite the symlink targets. This creates an arbitrary file clobber primitive relative to the privileges of the invoking user. Config.__init__() resolves the project-local pdm.toml path and _save_config() writes to the resolved target. If PROJECT_ROOT/pdm.toml is a symlink to another file, pdm config -l ... updates the target file instead of refusing the write. The same general problem exists for other project-local persistence paths that are written directly with no lstat / O_NOFOLLOW protection. For the pdm.toml PoC specifically, the target file must already contain parseable TOML. Otherwise the load step fails before the write path is reached. That parser constraint does not apply to the .pdm-python or .python-version sinks. This issue has been fixed in version 2.27.0.
    Severity
    6.8 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-61 - UNIX Symbolic Link (Symlink) Following
    Assigner
    References
    Impacted products
    Vendor Product Version
    pdm-project pdm Affected: < 2.27.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2023-45805 (GCVE-0-2023-45805)

    Vulnerability from nvd – Published: 2023-10-20 18:12 – Updated: 2024-09-12 15:01
    VLAI
    Title
    Trojan Lockfilein pdm
    Summary
    pdm is a Python package and dependency manager supporting the latest PEP standards. It's possible to craft a malicious `pdm.lock` file that could allow e.g. an insider or a malicious open source project to appear to depend on a trusted PyPI project, but actually install another project. A project `foo` can be targeted by creating the project `foo-2` and uploading the file `foo-2-2.tar.gz` to pypi.org. PyPI will see this as project `foo-2` version `2`, while PDM will see this as project `foo` version `2-2`. The version must only be `parseable as a version` and the filename must be a prefix of the project name, but it's not verified to match the version being installed. Version `2-2` is also not a valid normalized version per PEP 440. Matching the project name exactly (not just prefix) would fix the issue. When installing dependencies with PDM, what's actually installed could differ from what's listed in `pyproject.toml` (including arbitrary code execution on install). It could also be used for downgrade attacks by only changing the version. This issue has been addressed in commit `6853e2642df` which is included in release version `2.9.4`. Users are advised to upgrade. There are no known workarounds for this vulnerability.
    Severity
    7.8 (High)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-20 - Improper Input Validation
    Assigner
    References
    Impacted products
    Vendor Product Version
    pdm-project pdm Affected: >= 2.0.0,< 2.9.4
    		Create a notification for this product.
    frostming pdm Affected: 2.0.0 , < 2.10.0 (custom)
        cpe:2.3:a:frostming:pdm:*:*:*:*:*:python:*:*
    		 Create a notification for this product.
    frostming unearth Affected: 0 , < 0.11.2 (custom)
        cpe:2.3:a:frostming:unearth:*:*:*:*:*:python:*:*
    		 Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-47781 (GCVE-0-2026-47781)

    Vulnerability from cvelistv5 – Published: 2026-08-04 18:42 – Updated: 2026-08-05 13:48
    VLAI
    Title
    pdm: Project-Controlled `.pdm-plugins` Content Executes Before CLI Parsing
    Summary
    PDM is a Python package and dependency manager. In versions up to and including 2.26.9, PDM automatically loads project-local plugins from a .pdm-plugins directory during initialization, allowing an attacker-controlled file in an untrusted repository checkout to execute arbitrary Python code before any command is parsed. This happens because load_plugins() runs during Core.init() and adds .pdm-plugins via site.addsitedir(), which processes .pth files and immediately executes any line beginning with import, so the code runs with the privileges of the user invoking pdm and even a benign command such as pdm --version triggers it (making the impact strongest in CI, automation, and privileged contexts). The issue is fixed in version 2.27.0.
    Severity
    8.4 (High)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
    • CWE-94 - Improper Control of Generation of Code ('Code Injection')
    Assigner
    References
    Impacted products
    Vendor Product Version
    pdm-project pdm Affected: < 2.27.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-47764 (GCVE-0-2026-47764)

    Vulnerability from cvelistv5 – Published: 2026-08-04 17:57 – Updated: 2026-08-05 13:47
    VLAI
    Title
    pdm: Path traversal in wheel installation via overridden write_to_fs
    Summary
    pdm is a Python package and dependency manager supporting the latest PEP standards. Versions prior to 2.27.0 are vulnerable to path traversal through write_to_fs. InstallDestination.write_to_fs() in src/pdm/installers/installers.py overrides the base class to add symlink/hardlink support but replaces the safe _path_with_destdir() (which validates via Path.resolve() + is_relative_to()) with a bare os.path.join() that performs no path validation. A malicious wheel with traversal entries can write arbitrary files. This issue has been fixed in version 2.27.0.
    Severity
    8.4 (High)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Assigner
    References
    Impacted products
    Vendor Product Version
    pdm-project pdm Affected: < 2.27.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-47763 (GCVE-0-2026-47763)

    Vulnerability from cvelistv5 – Published: 2026-08-04 17:29 – Updated: 2026-08-05 15:00
    VLAI
    Title
    pdm: Project-Local State and Config Writes Follow Symlinks
    Summary
    pdm is a Python package and dependency manager supporting the latest PEP standards. In versions prior to 2.27.0, pdm writes several project-local state or configuration files without symlink protection. If a malicious repository places those files as symlinks, local PDM operations can overwrite the symlink targets. This creates an arbitrary file clobber primitive relative to the privileges of the invoking user. Config.__init__() resolves the project-local pdm.toml path and _save_config() writes to the resolved target. If PROJECT_ROOT/pdm.toml is a symlink to another file, pdm config -l ... updates the target file instead of refusing the write. The same general problem exists for other project-local persistence paths that are written directly with no lstat / O_NOFOLLOW protection. For the pdm.toml PoC specifically, the target file must already contain parseable TOML. Otherwise the load step fails before the write path is reached. That parser constraint does not apply to the .pdm-python or .python-version sinks. This issue has been fixed in version 2.27.0.
    Severity
    6.8 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-61 - UNIX Symbolic Link (Symlink) Following
    Assigner
    References
    Impacted products
    Vendor Product Version
    pdm-project pdm Affected: < 2.27.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2023-45805 (GCVE-0-2023-45805)

    Vulnerability from cvelistv5 – Published: 2023-10-20 18:12 – Updated: 2024-09-12 15:01
    VLAI
    Title
    Trojan Lockfilein pdm
    Summary
    pdm is a Python package and dependency manager supporting the latest PEP standards. It's possible to craft a malicious `pdm.lock` file that could allow e.g. an insider or a malicious open source project to appear to depend on a trusted PyPI project, but actually install another project. A project `foo` can be targeted by creating the project `foo-2` and uploading the file `foo-2-2.tar.gz` to pypi.org. PyPI will see this as project `foo-2` version `2`, while PDM will see this as project `foo` version `2-2`. The version must only be `parseable as a version` and the filename must be a prefix of the project name, but it's not verified to match the version being installed. Version `2-2` is also not a valid normalized version per PEP 440. Matching the project name exactly (not just prefix) would fix the issue. When installing dependencies with PDM, what's actually installed could differ from what's listed in `pyproject.toml` (including arbitrary code execution on install). It could also be used for downgrade attacks by only changing the version. This issue has been addressed in commit `6853e2642df` which is included in release version `2.9.4`. Users are advised to upgrade. There are no known workarounds for this vulnerability.
    Severity
    7.8 (High)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-20 - Improper Input Validation
    Assigner
    References
    Impacted products
    Vendor Product Version
    pdm-project pdm Affected: >= 2.0.0,< 2.9.4
    		Create a notification for this product.
    frostming pdm Affected: 2.0.0 , < 2.10.0 (custom)
        cpe:2.3:a:frostming:pdm:*:*:*:*:*:python:*:*
    		 Create a notification for this product.
    frostming unearth Affected: 0 , < 0.11.2 (custom)
        cpe:2.3:a:frostming:unearth:*:*:*:*:*:python:*:*
    		 Create a notification for this product.
    Show details on NVD website
    To clipboard 

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