CVE-2026-4598

CVSS 8.7 HIGHEPSS 0.4%CWE-835

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.7EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

23 Mar 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs, allowing an attacker to hang the process permanently by supplying such crafted values (e.g., modInverse(0, m) or modInverse(-1, m)).

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P

Affected products

n/a · jsrsasign n/a · org.webjars.npm:jsrsasign

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References

https://gist.github.com/Kr0emer/a1bf5cd4547cc630d2dcc5e761de8264 https://github.com/kjur/jsrsasign/commit/ca5b027240287a1e71fe63019fc4400332594323 https://github.com/kjur/jsrsasign/pull/648 https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812263 https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370938