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OpenAdvisories
Medium ELSA-2026-55804 1 CVE

Moderate: nghttp2 security update (Oracle Linux 8)

Published Aug 18, 2026 · Updated Aug 18, 2026

Ecosystem: Oracle Linux

Summary

[1.33.0-6.3]
- fix HTTP Request/Response Smuggling and Response-Queue Poisoning via ambiguous HTTP/1.1 Upgrade requests (CVE-2026-58055)

Fixed packages 3

ReleasePackageFixed in
Oracle Linux · 8 libnghttp2 0:1.33.0-6.el8_10.3
Oracle Linux · 8 libnghttp2-devel 0:1.33.0-6.el8_10.3
Oracle Linux · 8 nghttp2 0:1.33.0-6.el8_10.3

Vulnerabilities 1

  • Medium 5.4
    CVE-2026-58055

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

    nghttp2's nghttpx proxy through 1.69.0 forwards an HTTP/1.1 Upgrade request that also carries a Content-Length header and body onto reusable keep-alive backend connections, re-adding the Upgrade and Connection headers while passing Content-Length verbatim. A …

    nghttp2 nghttp2 fluent-bit nghttp2 Debian Ubuntu Azure Linux Alpine Wolfi