High (7.8) in ibm qiskit ibm runtime. EPSS 0.4% chance of exploitation in the next 30 days. Fixed in qiskit-ibm-runtime 0.21.2.
Qiskit IBM Runtime is an environment that streamlines quantum computations and provides optimal implementations of the Qiskit quantum computing SDK. Starting in version 0.1.0 and prior to version 0.21.2, deserializing json data using `qiskit_ibm_runtime.RuntimeDecoder` can lead to arbitrary code execution given a correctly formatted input string. Version 0.21.2 contains a fix for this issue.
Severity
CVSS 3.1
7.8 high
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0.4% chance of exploitation in the next 30 days; higher than 31% of CVEs (scores of 2026-10-31)