CVE-2026-33891
Forge has Denial of Service via Infinite Loop in BigInteger.modInverse() with Zero Input
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
12th
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, a Denial of Service (DoS) vulnerability exists in the node-forge library due to an infinite loop in the BigInteger.modInverse() function (inherited from the bundled jsbn library). When modInverse() is called with a zero value as input, the internal Extended Euclidean Algorithm enters an unreachable exit condition, causing the process to hang indefinitely and consume 100% CPU. Version 1.4.0 patches the issue.
| CWE | CWE-835 |
| Vendor | digitalbazaar |
| Product | forge |
| Published | Mar 27, 2026 |
| Last Updated | Mar 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
digitalbazaar / forge
< 1.4.0