CVE-2026-47763

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 saveconfig() writes to the resolved target. If PROJECTROOT/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 / ONOFOLLOW 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.

Database specific

{
    "cwe_ids": [
        "CWE-61"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47763.json",
    "cna_assigner": "GitHub_M"
}

References

Affected packages

Git / github.com/pdm-project/pdm

Affected ranges

Type

GIT

Repo

https://github.com/pdm-project/pdm

Events

Introduced

Fixed

09c95b7842844f4e857c88f669e1c666db405c71

Database specific

Show details

{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.27.0"
        }
    ]
}

Affected versions

0.*

0.0.1

0.0.2

0.0.3

0.0.4

0.0.5

0.0.6

0.1.0

0.1.1

0.1.2

0.10.0

0.10.1

0.10.2

0.11.0

0.12.0

0.12.1

0.12.2

0.12.3

0.2.0

0.2.1

0.2.2

0.2.3

0.2.4

0.2.5

0.2.6

0.3.0

0.3.1

0.3.2

0.4.0

0.4.1

0.4.2

0.5.0

0.6.0

0.6.1

0.6.2

0.6.3

0.6.4

0.6.5

0.7.0

0.7.1

0.8.0

0.8.1

0.8.2

0.8.3

0.8.4

0.8.5

0.8.6

0.8.7

0.9.0

0.9.1

0.9.2

1.*

1.0.0

1.0.0b0

1.0.0b2

1.1.0

1.10.0

1.10.1

1.10.2

1.10.3

1.11.0

1.11.1

1.11.2

1.11.3

1.12.0

1.12.1

1.12.2

1.12.3

1.12.4

1.12.5

1.12.6

1.12.7

1.12.8

1.13.0

1.13.0.post0

1.13.1

1.13.2

1.13.3

1.13.4

1.13.5

1.13.6

1.14.0

1.14.1

1.15.0

1.15.1

1.15.2

1.15.3

1.15.4

1.2.0

1.2.0post1

1.3.0

1.3.1

1.3.2

1.3.3

1.3.4

1.4.0

1.4.1

1.4.2

1.4.3

1.4.4

1.4.5

1.5.0

1.5.0b0

1.5.0b1

1.5.1

1.5.2

1.5.3

1.6.0

1.6.1

1.6.2

1.6.3

1.6.4

1.7.0

1.7.1

1.7.2

1.8.0

1.8.1

1.8.2

1.8.3

1.8.4

1.8.5

1.9.0

2.*

2.0.0

2.0.0a1

2.0.0b1

2.0.0b2

2.0.1

2.0.2

2.0.3

2.1.0

2.1.1

2.1.2

2.1.3

2.1.4

2.1.5

2.10.0

2.10.1

2.10.2

2.10.3

2.10.4

2.11.0

2.11.1

2.11.2

2.12.0

2.12.1

2.12.2

2.12.3

2.12.4

2.13.0

2.13.1

2.13.2

2.13.3

2.14.0

2.15.0

2.15.1

2.15.2

2.15.3

2.15.4

2.16.0

2.16.1

2.17.0

2.17.1

2.17.2

2.17.3

2.18.0

2.18.1

2.18.2

2.19.0

2.19.1

2.19.2

2.19.3

2.2.0

2.2.1

2.20.0

2.20.0.post1

2.20.1

2.21.0

2.22.0

2.22.1

2.22.2

2.22.3

2.22.4

2.23.0

2.23.1

2.24.0

2.24.1

2.24.2

2.25.0

2.25.1

2.25.2

2.25.3

2.25.4

2.25.5

2.25.6

2.25.7

2.25.8

2.25.9

2.26.0

2.26.1

2.26.2

2.26.3

2.26.4

2.26.5

2.26.6

2.26.7

2.26.8

2.26.9

2.3.0

2.3.1

2.3.2

2.3.3

2.3.4

2.4.0

2.4.1

2.4.2

2.4.3

2.4.4

2.4.5

2.4.6

2.4.7

2.4.8

2.4.9

2.5.0

2.5.0b0

2.5.1

2.5.2

2.5.3

2.6.0

2.6.1

2.7.0

2.7.1

2.7.2

2.7.3

2.7.4

2.8.0

2.8.0a0

2.8.0a1

2.8.0a2

2.8.1

2.8.2

2.9.0

2.9.1

2.9.2

2.9.3

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47763.json"