CVE-2026-56848
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 7.5epss 0.5%
from disclosure to weapon15 days
Published on NVDAug 4
1st PoC+15d
exploitation probability
0.5%top 60% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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**.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
nodejs · nodepublic PoCs found — 1
githubgithub.com/open-flaw/CVE-2026-56848★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.