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THREAT OPS › Threat News › [NVD] CVE-2026-4601 (HIGH 8.7) — 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 invali

[NVD] CVE-2026-4601 (HIGH 8.7) — 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 invali

lownvdPublished 2026-03-23

CVE-2026-4601 CVSS: 8.7 HIGH Published: 2026-03-23T06:16:21.893

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 fro

Indicators of compromise

CVE-2026-4601cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-4601