CVE-2026-4870

HIGH

IBM Qiskit SDK 0.43.0-2.5.0 - Parser Recursion Denial of Service

Title source: manual
STIX 2.1

Description

IBM Qiskit SDK 0.43.0 through 2.5.0 could allow an attacker to trigger a segmentation fault leading to a denial of service due to uncontrolled recursion in the parser.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
https://www.ibm.com/support/pages/node/7276123

Scores

CVSS v3 7.5
EPSS 0.0027
EPSS Percentile 18.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-674
Status published
Products (1)
IBM/Qiskit SDK 0.43.0 - 2.5.0
Published Jun 12, 2026
Tracked Since Jun 13, 2026