critical9.1
CVE-2026-4599
Versions of the package jsrsasign from 7.0.0 and before 11.1.1 are vulnerable to Incomplete Comparison with Missing Factors via the getRandomBigIntegerZeroToMa…
Impact
Versions 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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | jsrsasign | >= 7.0.0, < 11.1.1 | 11.1.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Kjur | Jsrsasign | from 7.0.0 before 11.1.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-5jx8-q4cp-rhh6
- https://nvd.nist.gov/vuln/detail/CVE-2026-4599
- https://github.com/kjur/jsrsasign/pull/647
- https://github.com/kjur/jsrsasign/commit/ee4b013478366cb16cea9a4bdfb218b6077f83b1
- https://gist.github.com/Kr0emer/081681818b51605c91945126d74b4f20
- 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
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812264