PYSEC-2026-2873 Picklescan (scan_pytorch) Bypass via dynamic eval MAGIC_NUMBER

Summary This is a scanning bypass to scanpytorch function in picklescan. As we can see in the implementation of getmagicnumber that uses pickletools.genopsdata to get the magicnumber with the condition opcode.name includes INT or LONG, but the PyTorch's implemtation simply uses picklemodule.load ...

PYSEC-2026-1783 Picklescan is vulnerable to RCE through missing detection when calling numpy.f2py.crackfortran._eval_length

Summary Picklescan uses the numpy.f2py.crackfortran.evallength function a NumPy F2PY helper to execute arbitrary Python code during unpickling. Details Picklescan fails to detect a malicious pickle that uses the gadget numpy.f2py.crackfortran.evallength in reduce, allowing arbitrary command...

PYSEC-2026-1791 Picklescan vulnerable to Arbitrary File Writing

Summary Picklescan has got open and shutil in its default dangerous blocklist to prevent arbitrary file overwrites. However the module distutils isnt blocked and can be used for the same purpose ie to write arbitrary files. Details This is another vulnerability which impacts the downstream user. ...

PYSEC-2026-1781 Picklescan has a missing detection when calling built-in python idlelib.debugobj.ObjectTreeItem

Summary Using idlelib.debugobj.ObjectTreeItem.SetText, which is a built-in python library function to execute remote pickle file. Details The attack payload executes in the following steps: First, the attacker craft the payload by calling to idlelib.debugobj.ObjectTreeItem.SetText function in...

PYSEC-2026-1786 Picklescan has a missing detection when calling built-in python idlelib.calltip.Calltip

Summary Using idlelib.calltip.Calltip.fetchtip, which is a built-in python library function to execute remote pickle file. Details The attack payload executes in the following steps: First, the attacker craft the payload by calling to idlelib.calltip.Calltip.fetchtip function in reduce method The...

PYSEC-2026-1792 Picklescan is missing detection when calling built-in python ensurepip._run_pip

Summary Using ensurepip.runpip function, which is a built-in python library function to execute remote pickle file. Details The attack payload executes in the following steps: First, the attacker craft the payload by calling to ensurepip.runpip function in reduce method Then when the victim after...

PYSEC-2026-1788 Picklescan has pickle parsing logic flaw that leads to malicious pickle file bypass

Details There's a parsing logic error in picklescan and modelscan while trying to deal with opcode STACKGLOBAL. Function listglobals when handling STACKGLOBAL at position n, it is expected to track two arguments but in wrong range. The loop only consider the range from 1 to n-1 but forgets to...

Deserialization of Untrusted Data

Overview picklescan is a Security scanner detecting Python Pickle files performing suspicious actions Affected versions of this package are vulnerable to Deserialization of Untrusted Data via the makelabel function in the reduce method. An attacker can execute arbitrary commands by crafting...

Deserialization of Untrusted Data

Overview picklescan is a Security scanner detecting Python Pickle files performing suspicious actions Affected versions of this package are vulnerable to Deserialization of Untrusted Data via the runcode function in the reduce methods of pickle files. An attacker can execute arbitrary code by...

Deserialization of Untrusted Data

Overview picklescan is a Security scanner detecting Python Pickle files performing suspicious actions Affected versions of this package are vulnerable to Deserialization of Untrusted Data via the lib2to3.pgen2.grammar.Grammar.loads function. An attacker can execute arbitrary code by providing a...

Deserialization of Untrusted Data

Overview picklescan is a Security scanner detecting Python Pickle files performing suspicious actions Affected versions of this package are vulnerable to Deserialization of Untrusted Data via the asyncio.unixevents.UnixSubprocessTransport.start function. An attacker can execute arbitrary commands...

CVE-2025-71372

Picklescan before 0.0.33 fails to detect the numpy.f2py.crackfortran.getlincoef gadget in pickle reduce methods, allowing arbitrary code execution. Attackers can craft malicious pickle files that execute arbitrary Python code when loaded, bypassing Picklescan's safety checks and enabling...

CVE-2025-71373

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...

CVE-2025-71366

picklescan before 0.0.28 fails to detect malicious torch.utils.bottleneck.main.runcprofile function calls in pickle files, allowing attackers to bypass safety checks. Remote attackers can embed undetected code in pickle files to achieve arbitrary code execution when victims load the files...

CVE-2025-71364

picklescan before 0.0.30 fails to detect the asyncio.unixevents.UnixSubprocessTransport.start function in pickle reduce methods, allowing remote code execution. Attackers can craft malicious pickle files embedding this built-in function that evade detection but execute arbitrary commands when...

CVE-2025-71356

picklescan before 0.0.28 fails to detect malicious torch.fx.experimental.symbolicshapes.ShapeEnv.evaluateguardsexpression function calls in pickle files. Attackers can embed undetected code in pickle files that executes remote code when loaded by victims...

CVE-2025-71345

picklescan before 0.0.30 fails to detect malicious pickle files that invoke torch.utils.bottleneck.main.runautogradprof function. Attackers can embed undetected code in pickle files that executes during deserialization, enabling remote code execution...

CVE-2025-71343

picklescan before 0.0.30 fails to detect malicious pickle files that exploit lib2to3.pgen2.pgen.ParserGenerator.makelabel function in the reduce method. Attackers can craft malicious pickle files with embedded code that evades detection but executes arbitrary commands when pickle.load is called...

CVE-2025-71353

picklescan before 0.0.28 fails to detect malicious pickle files that exploit torch.dynamo.guards.GuardBuilder.get function in reduce methods. Attackers can craft pickle files with embedded code that evades picklescan detection and executes arbitrary commands when loaded...

CVE-2025-71375 picklescan - Undetected Remote Code Execution via _operator.methodcaller

picklescan before 0.0.34 fails to detect the operator.methodcaller built-in function when scanning pickle files for malicious code. Attackers can craft malicious pickle payloads using operator.methodcaller that evade detection and execute arbitrary code when loaded by pickle.load...