CVE-2026-53872

HIGH

picklescan - Arbitrary File Read via Unsafe Pickle Deserialization

Title source: cna

Description

picklescan before 0.0.35 contains an unsafe pickle deserialization vulnerability allowing unauthenticated attackers to read arbitrary server files by chaining io.FileIO and urllib.request.urlopen. Attackers can bypass RCE-focused blocklists to exfiltrate sensitive data like /etc/passwd to external servers.

References (2)

Core 2

Core References

Vendor Advisory vendor-advisory

GHSA Advisory GHSA-9726-w42j-3qjr

https://github.com/mmaitre314/picklescan/security/advisories/GHSA-9726-w42j-3qjr

Third Party Advisory third-party-advisory

VulnCheck Advisory: picklescan - Arbitrary File Read via Unsafe Pickle Deserialization

https://www.vulncheck.com/advisories/picklescan-arbitrary-file-read-via-unsafe-pickle-deserialization

Scores

CVSS v3 7.5

EPSS 0.0051

EPSS Percentile 39.9%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-22

Status published

Products (3)

picklescan/picklescan < 0.0.35

picklescan/picklescan 0.0.35

pypi/picklescan 0 - 0.0.35PyPI

Published Jun 17, 2026

Tracked Since Jun 17, 2026