HIGH
CVE-2026-56848
CVSS
7.5
Description
A flaw in Node.js HTTP/2 handling allows `nghttp2_session_mem_send()` to be called re-entrantly while `nghttp2_session_mem_recv()` is executing, resulting in a heap-use-after-free.
This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.
Weakness (CWE)
CWE-416
Use After Free
EPSS Score
0.49%
Probability of exploitation in next 30 days
41.2th percentile
Base CVE data derived from NVD (public domain). Enrichment by
dbcve.org
(CC-BY-4.0). Fetched via API.