CVE-2026-4603
- State
- Published
- Severity
- 5.1 Medium
- Published
- Mar 23, 2026
- Updated
- Mar 23, 2026
- Reserved
- Mar 22, 2026
Description
Versions of the package jsrsasign before 11.1.1 are vulnerable to Division by zero due to the RSASetPublic/KEYUTIL parsing path in ext/rsa.js and the BigInteger.modPowInt reduction logic in ext/jsbn.js. An attacker can force RSA public-key operations (e.g., verify and encryption) to collapse to deterministic zero outputs and hide “invalid key” errors by supplying a JWK whose modulus decodes to zero.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | snyk |
| 3.1 | 5.9 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P | snyk |
Weaknesses
- CWE-369 Division by zero
Affected Products
| Product | Versions |
|---|---|
jsrsasignn/a |
|
References
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