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CVE-2025-49630

Published: Jul 10, 2025

Modified: Nov 4, 2025

PUBLISHED

Description

In certain proxy configurations, a denial of service attack against Apache HTTP Server versions 2.4.26 through to 2.4.63 can be triggered by untrusted clients causing an assertion in mod_proxy_http2. Configurations affected are a reverse proxy is configured for an HTTP/2 backend, with ProxyPreserveHost set to "on".

Vendor	Product	Versions
Apache Software Foundation	Apache HTTP Server	affected `2.4.26 - <= 2.4.63`

Weaknesses (CWE)

References

https://httpd.apache.org/security/vulnerabilities_24.html

vendor-advisory

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