CVE-2026-21713
טרם דורגה
תיאור (מקור, אנגלית)
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**.
מדדים
- EPSS — סבירות ניצול
- 0% (אחוזון 000) נכון ל-24/9/2026
- CWE
- CWE-208
מוצרים מושפעים
nodejs: node.js