Vulnerability · Published Jun 17, 2026 · Assigned by VulnCheck

CVE-2026-53875picklescan - Scanning Bypass via Dynamic Eval in scan_pytorch

High 7.1

In plain English

A high-severity security flaw in picklescan from picklescan. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)7.1High

Exploit odds (30 days)0.6%top 53.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

picklescan before 1.0.3 contains a scanning bypass vulnerability in the scan_pytorch function that allows attackers to embed malicious magic numbers via dynamic eval using the __reduce__ trick. Attackers can craft malicious PyTorch payloads that evade picklescan detection while remaining executable, enabling arbitrary code execution when loaded with torch.load().

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	picklescan	1.0.3	GHSA-97f8-7cmv-76j2
PyPI	picklescan	1.0.3	PYSEC-2026-2873

Affected products (as reported)

Vendor	Product	Versions
picklescan	picklescan	0 – before 1.0.3

Weakness: CWE-95 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

References

GHSA Advisory GHSA-97f8-7cmv-76j2 vendor-advisory
https://github.com/mmaitre314/picklescan/commit/2a8383cfeb4158567f9770d86597300c9e508d0f patch
https://github.com/mmaitre314/picklescan/commit/134179474539648ba7dee1317959529fbd0e7f89 patch
VulnCheck Advisory: picklescan - Scanning Bypass via Dynamic Eval in scan_pytorch third-party-advisory