When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface. ReadHeaderTimeout is unexpectedly not being applied when doing this.
Exact source revision recorded 25 Oct 2026 14:19:10 UTC. It does not establish the source's current position. Latest evidence.
nvd · CVE-2026-56853
PublishedNVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.
Source analysis status: Awaiting Analysis
Weakness classifications: CWE-770
Original publisher date fields
published: 2026-08-13T22:17:22.093
lastModified: 2026-09-03T16:37:52.170
No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.
Original source record · Cite this exact observation · Complete original publisher JSON