CVE-2026-4599
critical · 9.3Versions 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.
9.3
CVSS
0.5%
EPSS (exploit prob.)
40th
EPSS percentile
2026-03-23
Published
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/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
Weaknesses
CWE-1023CWE-338
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| kjur | jsrsasign | >= 7.0.0, < 11.1.1 |
Check a specific version with /api/v1/cve/match.
References
- https://gist.github.com/Kr0emer/081681818b51605c91945126d74b4f20
- https://github.com/kjur/jsrsasign/commit/ee4b013478366cb16cea9a4bdfb218b6077f83b1
- https://github.com/kjur/jsrsasign/pull/647
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812264
- https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370939
- https://access.redhat.com/errata/RHSA-2026:19375
- https://access.redhat.com/errata/RHSA-2026:19409
- https://access.redhat.com/errata/RHSA-2026:19410
- https://access.redhat.com/errata/RHSA-2026:6568
- https://access.redhat.com/errata/RHSA-2026:6720
- https://access.redhat.com/errata/RHSA-2026:6912
- https://access.redhat.com/errata/RHSA-2026:6926
- https://access.redhat.com/security/cve/CVE-2026-4599
- https://bugzilla.redhat.com/show_bug.cgi?id=2450207
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4599.json
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2026-4599