CVE-2025-71344 PUBLISHED

picklescan - Arbitrary Code Execution via Undetected ensurepip._run_pip Function

Assigner: VulnCheck
Reserved: 20.06.2026 Published: 22.06.2026 Updated: 22.06.2026

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.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS Score: 7.6

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	None
User Interaction	Passive

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS Score: 8.1

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	Required	Availability Impact	None

CVSS 3.1

Product Status

Vendor	picklescan
Product	picklescan
Versions	Default: unaffected affected from 0 to 0.0.30 (excl.) Version 0.0.30 is unaffected

CVE-2025-71344 PUBLISHED

picklescan - Arbitrary Code Execution via Undetected ensurepip._run_pip Function

Metrics

Product Status

Credits

References

Problem Types