PyOD persistence.load deserializes untrusted artifacts before validation
A vulnerability was detected in yzhao062 pyod 3.5.0/3.5.1/3.5.2. Affected is the function pyod.utils.persistence.load of the file pyod/utils/persistence.py. Performing a manipulation of the argument path results in deserialization. The attack can be initiated remotely. The pull request to fix this issue requires some minor changes.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | pyod | >= 3.5.0, < 3.6.2 | 3.6.2 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-15529
- https://github.com/yzhao062/pyod/issues/697
- https://github.com/yzhao062/pyod/pull/698
- https://github.com/yzhao062/pyod/commit/16e6e3ad8921a4e18ccc8c2afe474db7d002c001
- https://github.com/yzhao062/pyod
- https://github.com/yzhao062/pyod/releases/tag/v3.6.2
- https://pypi.org/project/pyod/3.6.2
- https://vuldb.com/cve/CVE-2026-15529
- https://vuldb.com/submit/854559
- https://vuldb.com/vuln/377872
- https://vuldb.com/vuln/377872/cti
- https://pypi.org/project/pyod
- https://github.com/advisories/GHSA-997v-r4v7-9f3g
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L- Weakness (CWE)
CWE-20, CWE-502- Platform
- Python (PyPI)
- Package
pyod- Disclosed
- 13.07.2026
- Updated
- 11.10.2026 15:18
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-3909 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-997v-r4v7-9f3g - CC BY 4.0
Vulnerability history: pyod
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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