CVE-2026-4602
- State
- Published
- Severity
- 8.7 High
- Published
- Mar 23, 2026
- Updated
- Sep 10, 2026
- Reserved
- Mar 22, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | snyk |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P | snyk |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N | redhat-SADP |
Weaknesses
- CWE-681 Incorrect Conversion between Numeric Types
Affected Products
| Product | Versions |
|---|---|
jsrsasignn/a |
|
org.webjars.npm:jsrsasignn/a |
|
References
- https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15371175
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812274
- https://gist.github.com/Kr0emer/7ecd2be7d17419e4677315ef3758faf5
- https://github.com/kjur/jsrsasign/pull/650
- https://github.com/kjur/jsrsasign/commit/5ea1c32bb2aa894b4bd29849839afe4f98728195
- https://access.redhat.com/security/cve/CVE-2026-4602vdb-entry
- RHBZ#2450206issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4602.json
- https://access.redhat.com/errata/RHSA-2026:19409vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:19410vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:6912vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:6720vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:6568vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:19375vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:6926vendor-advisory
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