CVE-2025-71371
picklescan before 0.0.29 fails to detect malicious pickle files using code.InteractiveInterpreter.runcode in reduce methods. Attackers can c
CVSS
8.1
High
EPSS
0.5%
p39
KEV
—
Exploit Today
12
0-100
Published: Jun 30, 2026 · Last modified: Jul 1, 2026 · CWE-502
0.5%EPSS · 30 days0.5%
2026-07-012026-07-17
picklescan before 0.0.29 fails to detect malicious pickle files using code.InteractiveInterpreter.runcode in reduce methods. Attackers can craft pickle payloads that bypass picklescan detection and execute arbitrary code when loaded via pickle.load().
- github.comhttps://github.com/mmaitre314/picklescan/security/advisories/GHSA-cj3c-v495-4xqh
- www.vulncheck.comhttps://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-code-interactiveinterpreter-detection-bypass
- github.comhttps://github.com/mmaitre314/picklescan/security/advisories/GHSA-cj3c-v495-4xqh
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——29Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.3dCVE-2025-560059.8 CRI96.7%
——29An undocumented and unsafe feature in the PLY (Python Lex-Yacc) library 3.11 allows Remote Code Execution (RCE) via the `picklefile` parameter in the `yacc()` function. This parameter accepts a `.pkl` file that is deserialized with `pickle.load()` without validation. Because `pickle` allows execution of embedded code via `__reduce__()`, an attacker can achieve code execution by passing a malicious pickle file. The parameter is not mentioned in official documentation or the GitHub repository, yet it is active in the PyPI version. This introduces a stealthy backdoor and persistence risk. NOTE: A third-party states that this vulnerability should be rejected because the proof of concept does not demonstrate arbitrary code execution and fails to complete successfully.3d