{"affected":[{"product":"Qiskit SDK","source":"CNA: ibm","vendor":"IBM","versions":[{"lessThanOrEqual":"2.6.1","status":"affected","version":"2.4.0","versionType":"semver"}]}],"cveId":"CVE-2026-116500","cwes":["CWE-502"],"description":"IBM Qiskit SDK 2.4.0 through 2.6.1 could allow a local attacker to cause a denial of service due to unbound recursion during deserialization of untrusted QPY payloads.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.2,"severity":"medium","source":"CNA: ibm","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},{"score":6.2,"severity":"medium","source":"NVD: psirt@us.ibm.com","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1794158197113,"publishedAt":1794157493713,"references":[{"source":"CNA: ibm","tags":["vendor-advisory","patch"],"url":"https://www.ibm.com/support/pages/node/7295235"},{"source":"psirt@us.ibm.com","tags":[],"url":"https://www.ibm.com/support/pages/node/7295235"}],"remediation":[{"kind":"fix","source":"CNA: ibm","text":"Remediation/Fixes guidance:\n\n\n\nThe issue is addressed in Qiskit versions v2.6.2.\n\n\n\nProduct(s)Version(s) number and/or range Remediation/Fix/Instructions< Qiskit SDK https://github.com/qiskit/qiskit  - qiskit.qpy.load() function>v2.6.2\n\nUpgrade to the patched versions: qiskit v2.6.2."},{"kind":"workaround","source":"CNA: ibm","text":"Workarounds/Mitigation guidance:\n\n\n\n\nNone"},{"kind":"fix","source":"CNA: ibm","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://www.ibm.com/support/pages/node/7295235"}],"revision":"27f47643e1e818bd2ac621bc2ec3a9ab850f03c258e511bc2e1a3496ab499a3f","sources":[{"modifiedAt":1794157493713,"name":"CNA: ibm","retrievedAt":1794161312016,"url":"https://www.cve.org/CVERecord?id=CVE-2026-116500"},{"modifiedAt":1794158197113,"name":"NVD","retrievedAt":1794161787216,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116500"}],"ssvc":null,"status":"published","title":"Unbound Recursion in QPY deserialization can lead to denial of service","updatedAt":1794161787216}