TI-2026-40680 Aliases CVE-2026-56315 GHSA-g38g-8gr9-h9xp

picklescan - Remote Code Execution via Unblocked Standard Library Modules

HIGH 81CWE-184Published 2026-06-23 · Updated 2026-06-23

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-693.

Summary

picklescan before 1.0.4 fails to block at least seven Python standard library modules (including uuid, _osx_support, _aix_support, _pyrepl.pager, and imaplib) exposing eight functions that provide direct arbitrary command execution. Attackers can craft malicious pickle files importing these unblocked modules to achieve remote code execution while bypassing picklescan's safety validation entirely.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01147 66th percentileScored 2026-11-07

Fix Fixed picklescan (picklescan): 1.0.4picklescan (PyPI): 1.0.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Total

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 1.0.4	1.0.4	Patch available	CNA
—	picklescan (PyPI)	before 1.0.4	1.0.4	Patch available	GHSA-g38g-8gr9-h9xp

picklescan Vendorpicklescan Affected before 1.0.4 Fixed in 1.0.4 Patch available CNA
picklescan (PyPI) Vendor— Affected before 1.0.4 Fixed in 1.0.4 Patch available GHSA-g38g-8gr9-h9xp

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 1.0.4
Fix · GHSA-g38g-8gr9-h9xp picklescan (PyPI) Fixed in 1.0.4 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-56315
2026-10-03 Alias added: GHSA-g38g-8gr9-h9xp

References

Advisory 2

Other 2

TI-2026-03009 picklescan - Universal Blocklist Bypass via pkgutil.resolve_name CVSS 4.0CRITICAL 10.0
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
TI-2025-43442 picklescan - Arbitrary File Writing via distutils Module Bypass 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