CVE-2026-4598CWE-1287CWE-835

CVE-2026-4598

High · published March 23, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
62.5
In the wild
Unconfirmed
What it is

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)).

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01002 · 62.5th percentile
Weaknesses
CWE-1287 · Improper Validation of Specified Type of Input; CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')
Published
2026-03-23T10:16Z
Affected products (1)
ProductVersionsFixed in
kjur/jsrsasign< 11.1.111.1.1
References (15)
https://gist.github.com/Kr0emer/a1bf5cd4547cc630d2dcc5e761de8264 · [email protected]https://github.com/kjur/jsrsasign/commit/ca5b027240287a1e71fe63019fc4400332594323 · [email protected]https://github.com/kjur/jsrsasign/pull/648 · [email protected]https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812263 · [email protected]https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370938 · [email protected]https://access.redhat.com/errata/RHSA-2026:19375 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:19409 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:19410 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:22840 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:23361 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:6568 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:6720 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/security/cve/CVE-2026-4598 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://bugzilla.redhat.com/show_bug.cgi?id=2450210 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4598.json · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
EPSS history
Timeline
  • 23 MAR 05:00Z
    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…
    cvelistv5