Risk Scores
CVSS v3.0
5.900000095367432
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Bitnami | node | 0, 21.0.0, 23.0.0 |
Timeline
- Apr 6, 2026 CVE Published
- Apr 13, 2026 CVE Updated
A flaw in Node.js HMAC verification uses a non-constant-time comparison when validating user-provided signatures, potentially leaking timing information proportional to the number of matching bytes. Under certain threat models where high-resolution timing measurements are possible, this behavior could be exploited as a timing oracle to infer HMAC values. Node.js already provides timing-safe comparison primitives used elsewhere in the codebase, indicating this is an oversight rather than an intentional design decision. This vulnerability affects **20.x, 22.x, 24.x, and 25.x**.
| Vendor | Product | Versions |
|---|---|---|
| Bitnami | node | 0, 21.0.0, 23.0.0 |