TI-2025-43465 Aliases CVE-2025-71344 GHSA-xp4f-hrf8-rxw7

picklescan - Arbitrary Code Execution via Undetected ensurepip._run_pip Function

HIGH 66CWE-502Published 2026-06-22 · Updated 2026-06-23

Key facts

Attack vector: Network
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: Present
Impact type: Code execution
Confidentiality · integrity · availability: High · High · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-502.

Summary

picklescan before 0.0.30 (affected versions 0.0.26 and earlier) fails to detect the ensurepip._run_pip built-in function when scanning pickle files, allowing attackers to execute arbitrary code. Malicious pickle files embedding ensurepip._run_pip calls in __reduce__ methods bypass picklescan detection and achieve remote code execution upon pickle.load() invocation.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00467 40th percentileScored 2026-11-07

Fix Fixed picklescan (picklescan): 0.0.30picklescan (PyPI): 0.0.30

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
picklescan	picklescan	before 0.0.30	0.0.30	Patch available	CNA
—	picklescan (PyPI)	before 0.0.30	0.0.30	Patch available	GHSA-xp4f-hrf8-rxw7

picklescan Vendorpicklescan Affected before 0.0.30 Fixed in 0.0.30 Patch available CNA
picklescan (PyPI) Vendor— Affected before 0.0.30 Fixed in 0.0.30 Patch available GHSA-xp4f-hrf8-rxw7

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:mmaitre314:picklescan::::::::	—	—	picklescan

cpe:2.3:a:mmaitre314:picklescan:*:*:*:*:*:*:*:* Versions — — ·picklescan

Remediation

Fix · CNA picklescan (picklescan) Fixed in 0.0.30
Fix · GHSA-xp4f-hrf8-rxw7 picklescan (PyPI) Fixed in 0.0.30 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-71344
2026-10-03 Alias added: GHSA-xp4f-hrf8-rxw7

References

Advisory 3

Other 4

TI-2026-03009 picklescan - Universal Blocklist Bypass via pkgutil.resolve_name CVSS 4.0CRITICAL 10.0
TI-2026-40680 picklescan - Remote Code Execution via Unblocked Standard Library Modules CVSS 4.0CRITICAL 9.3
TI-2026-38870 picklescan - Arbitrary Code Execution via Obfuscated eval Call CVSS 4.0CRITICAL 9.3
TI-2026-38869 picklescan - Arbitrary Code Execution via profile.run() Blocklist Bypass CVSS 4.0CRITICAL 9.3
TI-2025-43446 picklescan - Detection Bypass via STACK_GLOBAL Opcode Parsing Logic Flaw CVSS 4.0CRITICAL 9.3
TI-2025-43444 picklescan - Remote Code Execution via Unblocked ctypes Module CVSS 4.0CRITICAL 9.3

See all 57 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences