CVE-2026-56848

nodejs / node PUBLISHED

Description (CNA)

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**.

Affected (CNA)

Vendor / product	Versions
nodejs / node	affected 26.5.0 through 26.5.0; affected 24.18.0 through 24.18.0; affected 22.23.1 through 22.23.1

CWE

CWE-416

References

https://nodejs.org/en/blog/vulnerability/july-2026-security-releases

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.