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.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| pdm-project | pdm | affected |
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Project Subscriptions
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| Source | ID | Title |
|---|---|---|
 Github GHSA |
GHSA-ghq2-5c67-fprm | PDM: Project-Local State and Config Writes Follow Symlinks |
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Tue, 04 Aug 2026 17:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | pdm: Project-Local State and Config Writes Follow Symlinks | |
| Weaknesses | CWE-61 | |
| References |
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| Metrics |
cvssV4_0
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Projects
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-04T17:29:41.188Z
Reserved: 2026-05-19T22:36:16.881Z
Link: CVE-2026-47763
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
Updated: 2026-08-04T20:00:05Z