---
id: CVE-2025-71352
title: >-
  picklescan before 0.0.29 fails to detect the built-in Python
  trace.Trace.runctx function when used in pickle file reduce methods, allowing
  attackers to execute arbitrary code
summary: >-
  picklescan before 0.0.29 fails to detect the built-in Python
  trace.Trace.runctx function when used in pickle file reduce methods, allowing
  attackers to execute arbitrary code. Remote attackers can craft malicious
  pickle files with trace.…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-693
vendor: picklescan
product: picklescan
affected:
  - picklescan < 0.0.29
patched:
  - picklescan 0.0.29
published: '2026-06-30'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T21:10:00.227'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-71352'
references:
  - url: >-
      https://github.com/mmaitre314/picklescan/security/advisories/GHSA-g344-hcph-8vgg
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-undetected-trace-trace-runctx-in-pickle-files
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/mmaitre314/picklescan/security/advisories/GHSA-g344-hcph-8vgg
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://github.com/mmaitre314/picklescan/commit/aecd11be98702caa9ba9b12189d91ad596a36114
  - url: 'https://github.com/mmaitre314/picklescan'
tags:
  - nvd
  - osv
  - pip
epss: 0.00716
epssPercentile: 0.53554
aliases:
  - GHSA-g344-hcph-8vgg
ecosystem: pip
ingestedAt: '2026-07-08T18:25:49.192Z'
---

## Overview

picklescan before 0.0.29 fails to detect the built-in Python trace.Trace.runctx function when used in pickle file reduce methods, allowing attackers to execute arbitrary code. Remote attackers can craft malicious pickle files with trace.Trace.runctx payloads that bypass picklescan detection and execute code upon pickle.load() invocation.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2025-71352)

Affected packages:

- `picklescan < 0.0.29`

Patched in:

- `picklescan 0.0.29`

Source: https://osv.dev/vulnerability/GHSA-g344-hcph-8vgg