---
id: GHSA-5v23-73v4-w2fp
title: 'Duplicate Advisory: picklescan has Arbitrary file read using `io.FileIO` '
summary: 'Duplicate Advisory: picklescan has Arbitrary file read using `io.FileIO` '
severity: high
cvss: 7.5
cwe:
  - CWE-22
vendor: picklescan
product: picklescan
ecosystem: pip
affected:
  - picklescan < 0.0.35
patched:
  - picklescan 0.0.35
published: '2026-06-17'
updated: '2026-06-18'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-5v23-73v4-w2fp'
references:
  - url: >-
      https://github.com/mmaitre314/picklescan/security/advisories/GHSA-9726-w42j-3qjr
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53872'
  - url: >-
      https://www.vulncheck.com/advisories/picklescan-arbitrary-file-read-via-unsafe-pickle-deserialization
  - url: 'https://github.com/advisories/GHSA-5v23-73v4-w2fp'
tags:
  - ghsa
  - pip
ingestedAt: '2026-06-29T14:31:47.198Z'
---

## Overview

### Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-9726-w42j-3qjr. This link is maintained to preserve external references.

### Original 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.

## Affected packages

- `picklescan < 0.0.35`

## Remediation

Upgrade to a patched release:

- `picklescan 0.0.35`