7.7

CVE-2026-4602

Exploit
Versions of the package jsrsasign before 11.1.1 are vulnerable to Incorrect Conversion between Numeric Types due to handling negative exponents in ext/jsbn2.js. An attacker can force the computation of incorrect modular inverses and break signature verification by calling modPow with a negative exponent.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Kjur ≫ Jsrsasign SwPlatformnode.js Version < 11.1.1
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.49% 0.393
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Snyk 7.7 0 0
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Snyk 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE-681 Incorrect Conversion between Numeric Types

When converting from one data type to another, such as long to integer, data can be omitted or translated in a way that produces unexpected values. If the resulting values are used in a sensitive context, then dangerous behaviors may occur.

https://github.com/kjur/jsrsasign/pull/650
Issue Tracking
https://github.com/kjur/jsrsasign/commit/5ea1c32bb2aa894b4bd29849839afe4f98728195
Patch
https://bugzilla.redhat.com/show_bug.cgi?id=2450206
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4602.json
https://access.redhat.com/errata/RHSA-2026:19375
https://access.redhat.com/errata/RHSA-2026:6568
https://access.redhat.com/errata/RHSA-2026:6720
https://access.redhat.com/errata/RHSA-2026:19409
https://access.redhat.com/errata/RHSA-2026:19410
https://access.redhat.com/errata/RHSA-2026:6926
https://access.redhat.com/errata/RHSA-2026:6912
https://gist.github.com/Kr0emer/7ecd2be7d17419e4677315ef3758faf5
Third Party Advisory
Exploit
Mitigation
https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812274
https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15371175
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-4602