CVE-2026-4603

Published: Mar 23, 2026 Last Modified: Mar 23, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,1
Source: [email protected]
Attack Vector: local
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
MEDIUM 5,9
Source: [email protected]
Attack Vector: local
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: low
Integrity: low
Availability: low

Description

AI Translation Available

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.

369

Divide By Zero

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Crash, Exit, Or Restart
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: Medium
View CWE Details
https://gist.github.com/Kr0emer/5366b7364c4fbf7e754bc377f32…
https://gist.github.com/Kr0emer/5366b7364c4fbf7e754bc377f321e9f3
https://github.com/kjur/jsrsasign/commit/dc41d49fac4297e7a7…
https://github.com/kjur/jsrsasign/commit/dc41d49fac4297e7a737a3ef8ebd0aa9c49ef9…
https://github.com/kjur/jsrsasign/pull/649
https://github.com/kjur/jsrsasign/pull/649
https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15371176
https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15371176