---
id: CVE-2025-69872
title: >-
  DiskCache (python-diskcache) through 5.6.3 uses Python pickle for
  serialization by default
summary: >-
  DiskCache (python-diskcache) through 5.6.3 uses Python pickle for
  serialization by default. An attacker with write access to the cache directory
  can achieve arbitrary code execution when a victim application reads from the
  cache.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-94
  - CWE-502
published: '2026-02-11'
updated: '2026-06-30'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-69872'
references:
  - url: >-
      https://github.com/EthanKim88/ethan-cve-disclosures/blob/main/CVE-2025-69872-DiskCache-Pickle-Deserialization.md
    label: cve@mitre.org
  - url: 'https://github.com/grantjenks/python-diskcache'
    label: cve@mitre.org
  - url: 'https://access.redhat.com/errata/RHSA-2026:3713'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/security/cve/CVE-2025-69872'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2439059'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-69872.json
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-69872'
tags:
  - nvd
  - osv
  - pip
epss: 0.0053
epssPercentile: 0.43736
ingestedAt: '2026-07-03T18:53:52.201Z'
aliases:
  - GHSA-w8v5-vhqr-4h9v
  - PYSEC-2026-2447
ecosystem: pip
vendor: diskcache
product: diskcache
affected:
  - diskcache <= 5.6.3
---

## Overview

DiskCache (python-diskcache) through 5.6.3 uses Python pickle for serialization by default. An attacker with write access to the cache directory can achieve arbitrary code execution when a victim application reads from the cache.

## Remediation

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

## Package advisory (CVE-2025-69872)

Affected packages:

- `diskcache <= 5.6.3`

Source: https://osv.dev/vulnerability/GHSA-w8v5-vhqr-4h9v