Export limit exceeded: 374216 CVEs match your query. Please refine your search to export 10,000 CVEs or fewer.

Search

Use the Query Builder to create your own search query, or check out the documentation to learn the search syntax.

Search Examples

CVEs in KEV CVEs with EPSS >= 80% Crit. Microsoft High Apache SQL Injection (CWE-89) Linux Kernel High (CVSS 3.1) Apache Struts RCE (Remote Code Execution) XSS (CWE-79) Critical (CVSS 4.0) CVEs to check

Search Results (1 CVEs found)

Export CSV
CVE Vendors Products Updated CVSS v3.1
CVE-2026-71554 1 Python-hyper 1 H2 2026-08-07 5.3 Medium
h2 is a pure-Python implementation of a HTTP/2 protocol stack. Versions up to and including 4.4.0 accept request header blocks containing more than one Host header, and forward every Host header to the consuming application. Where the consumer downgrades HTTP/2 to HTTP/1.1, the resulting request carries two Host header lines, providing a request smuggling primitive. This issue is fixed in version 4.4.1.