CVE-2026-4601 (GCVE-0-2026-4601)

Vulnerability from cvelistv5 – Published: 2026-03-23 05:00 – Updated: 2026-03-23 14:41
VLAI?
Summary
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.
Severity ?
8.7 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N/E:P
CWE
  • CWE-325 - Missing Cryptographic Step
Assigner
References
Impacted products
Vendor Product Version
n/a jsrsasign Affected: 0 , < 11.1.1 (semver)
Credits
Kr0emer
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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