CVE-2026-45999.1CriticalCWE-1023

CVE-2026-4599: Kjur jsrsasign vulnerability

Kjur · jsrsasign

Fixed in 11.1.1 · Affected: Kjur jsrsasign before 11.1.1 · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.5%probability of exploitation in the next 30 days

43rd percentile

050100

Higher than 43% of scored CVEs

9.1CriticalCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

Versions of the package jsrsasign from 7.0.0 and before 11.1.1 are vulnerable to Incomplete Comparison with Missing Factors via the getRandomBigIntegerZeroToMax and getRandomBigIntegerMinToMax functions in src/crypto-1.1.js; an attacker can recover the private key by exploiting the incorrect compareTo checks that accept out-of-range candidates and thus bias DSA nonces during signature generation.

Affected products2

From the CVE record. A product or version that is not listed is unknown, not unaffected.

jsrsasignfrom 7.0.0 before 11.1.1
org.webjars.npm:jsrsasign8.0.12

On the Atlas

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Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Incomplete Comparison with Missing Factors · Input Validation and Logic
Vendor: Kjur
Published: March 2026
Band: Unlikely (under 1%), March 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-4599 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.

References

3 more references are in the CVE record.