What is CVE-2026-58055?

CVE-2026-58055 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. nghttp2 nghttpx - HTTP Request/Response Smuggling via Upgrade Request with Content-Length

Which CVE IDs does CVE-2026-58055 cover?

CVE-2026-58055 covers the following CVE IDs: CVE-2026-58055. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-58055?

CVE-2026-58055 has a CVSS v3 base score of 5.4, published by Microsoft Security Response Center (MSRC).

CVE-2026-58055MediumCVSS 5.4

nghttp2 nghttpx - HTTP Request/Response Smuggling via Upgrade Request with Content-Length

Vendor

Microsoft Security Response Center (MSRC)

Published

June 30, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-58055 →