CVE-2026-4870 – Qiskit SDK is vulnerable to specific functions may recurse too deeply and overflow the available stack space, when encountering certain classical expressions.

CVE ID :CVE-2026-4870

Published : June 12, 2026, 8:52 p.m. | 30 minutes ago

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.

Severity: 7.5 | HIGH

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