cvedb.io
CVE-2026-56848
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-08-04T17:16:56.207 · Last modified 2026-08-04T18:16:53.500

Summary

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**.

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References

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