CVE-2025-1403: PYSEC-2026-3045 - Malciously crafted QPY files can allows Remote Attackers to Cause Denial of Service in Qiskit

CVE-2025-1403 · Severity: low · CVSS 3.1 · Published 2026-07-13

Malciously crafted QPY files can allows Remote Attackers to Cause Denial of Service in Qiskit

Technologies: qiskit (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2025-1403 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-1403 being exploited in the wild.
How severe is CVE-2025-1403?
Low severity, with a CVSS score of 3.1, published 13 July 2026.
Which products and versions are affected?
qiskit (PyPI) ECOSYSTEM:introduced=0.45.0,fixed=1.3.0; qiskit-terra (PyPI) ECOSYSTEM:introduced=0.45.0,last_affected=0.46.3.
Is there a fix for CVE-2025-1403?
Yes. qiskit (PyPI): upgrade to 1.3.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-1403?
Check whether you run qiskit (PyPI) or qiskit-terra (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

  • qiskit (PyPI): upgrade to 1.3.0 or later
    pip install "qiskit>=1.3.0"

Affected products

  • qiskit (PyPI) ECOSYSTEM:introduced=0.45.0,fixed=1.3.0
  • qiskit-terra (PyPI) ECOSYSTEM:introduced=0.45.0,last_affected=0.46.3

Identifiers

  • CVE-2025-1403
  • GHSA-fpmr-m242-xm7x
  • PYSEC-2026-1859
  • PYSEC-2026-3045

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