CVE-2025-24359: PYSEC-2026-1195 - ASTEVAL Allows Maliciously Crafted Format Strings to Lead to Sandbox Escape

CVE-2025-24359 · Severity: low · CVSS 3.1 · Published 2026-07-07

ASTEVAL Allows Maliciously Crafted Format Strings to Lead to Sandbox Escape

Technologies: asteval (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2025-24359 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-24359 being exploited in the wild.
How severe is CVE-2025-24359?
Low severity, with a CVSS score of 3.1, published 7 July 2026.
Which products and versions are affected?
asteval (PyPI) ECOSYSTEM:introduced=0,fixed=1.0.6.
Is there a fix for CVE-2025-24359?
Yes. asteval (PyPI): upgrade to 1.0.6 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-24359?
Check whether you run asteval (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • asteval (PyPI): upgrade to 1.0.6 or later
    pip install "asteval>=1.0.6"

Affected products

  • asteval (PyPI) ECOSYSTEM:introduced=0,fixed=1.0.6

Identifiers

  • CVE-2025-24359
  • GHSA-3wwr-3g9f-9gc7
  • PYSEC-2026-1195

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