PYSEC-2026-1785 Picklescan has Incomplete List of Disallowed Inputs

Summary Currently picklescanner only blocks some specific functions of the pydoc and operator modules. Attackers can use other functions within these allowed modules to go through undetected and achieve RCE on the final user. Particularly pydoc.locate: Can dynamically resolve and import arbitrary...

CVE-2025-71373: Protection Mechanism Failure

picklescan before 0.0.33 fails to detect operator.methodcaller function calls in pickle files, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle payloads using operator.methodcaller that execute arbitrary code when loaded, compromising systems relying on...

Duplicate Advisory: Picklescan has Incomplete List of Disallowed Inputs

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-84r2-jw7c-4r5q. This link is maintained to preserve external references. Original Description picklescan before 0.0.33 contains an incomplete deny-list that fails to block pydoc.locate and operator.methodcaller...

CVE-2025-71320 picklescan - Remote Code Execution via Incomplete Disallowed Inputs

picklescan before 0.0.33 contains an incomplete deny-list that fails to block pydoc.locate and operator.methodcaller functions, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle files using these unblocked functions to achieve arbitrary code execution when...

CVE-2025-71320: Incomplete List of Disallowed Inputs

picklescan before 0.0.33 contains an incomplete deny-list that fails to block pydoc.locate and operator.methodcaller functions, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle files using these unblocked functions to achieve arbitrary code execution when...

PT-2025-55501

Summary Picklescan uses operator.methodcaller, which is a built-in python library function to execute remote pickle files. Details The attack payload executes in the following steps: - First, the attacker crafts the payload by calling the operator.methodcaller function in method reduce. - Then,...