CVE-2026-56848
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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**.
| CWE | CWE-416 |
| Vendor | nodejs |
| Product | node |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 4, 2026 |
| Last Updated | Aug 4, 2026 |
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CVSS v3 Breakdown
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected Versions
nodejs / node
26.5.0 ≤ 26.5.0 24.18.0 ≤ 24.18.0 22.23.1 ≤ 22.23.1