by Kastro CVE-2026-4601
Red Hat Migration Toolkit for Virtualization 2.1 — Versions of the package jsrsasign before 11.1.1 are vulnerable to Missing Cryptographic Step via the KJUR.crypto.DSA.signWithMessageHash…
Description · from the CVE record
Versions of the package jsrsasign before 11.1.1 are vulnerable to Missing Cryptographic Step via the KJUR.crypto.DSA.signWithMessageHash process in the DSA signing implementation. An attacker can recover the private key by forcing r or s to be zero, so the library emits an invalid signature without retrying, and then solves for x from the resulting signature.
Affected
ProductAffectedFixed inSource
jsrsasign< 11.1.111.1.1CNA
org.webjars.npm:jsrsasignall versions–CNA
Migration Toolkit for Virtualization 2.1see advisory1779139872redhat-SADP
Migration Toolkit for Virtualization 2.9see advisory1778927462redhat-SADP
Red Hat Quay 3.10see advisory1775169155redhat-SADP
Red Hat Quay 3.12see advisory1775253092redhat-SADP
Red Hat Quay 3.15see advisory1775169219redhat-SADP
Red Hat Quay 3.16see advisory1779204086redhat-SADP
Red Hat Quay 3.9see advisory1775169218redhat-SADP
Scores by source
snyk (CNA)9.4CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:H/SA:N/E:P
NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
redhat-SADP (CNA)8.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
snyk (CNA)8.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N/E:P
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total