Vulnerability · Published Mar 3, 2025 · Assigned by Sonatype

CVE-2025-1889picklescan - Security scanning bypass via non-standard file extensions

Medium 5.3

In plain English

A medium-severity security flaw in picklescan from mmaitre314. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.3Medium

Exploit odds (30 days)0.4%top 66.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

picklescan before 0.0.22 only considers standard pickle file extensions in the scope for its vulnerability scan. An attacker could craft a malicious model that uses Pickle and include a malicious pickle file with a non-standard file extension. Because the malicious pickle file inclusion is not considered as part of the scope of picklescan, the file would pass security checks and appear to be safe, when it could instead prove to be problematic.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	picklescan	0.0.22	GHSA-655q-fx9r-782v
PyPI	picklescan	0.0.22	GHSA-769v-p64c-89pr
PyPI	picklescan	0.0.21	PYSEC-2025-18
PyPI	picklescan	0.0.22	PYSEC-2025-19

Affected products (as reported)

Vendor	Product	Versions
mmaitre314	picklescan	0.0.1 – through 0.0.21

Weakness: CWE-646 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

References

https://www.sonatype.com/security-advisories/cve-2025-1889 third-party-advisory
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-655q-fx9r-782v third-party-advisory