CVE-2025-49630
Apache HTTP Server mod_proxy_http2 Denial of Service Vulnerability
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".
INFO
Published Date :
July 10, 2025, 5:15 p.m.
Last Modified :
July 10, 2025, 5:15 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-49630.
| URL | Resource |
|---|---|
| https://httpd.apache.org/security/vulnerabilities_24.html |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-49630 vulnerability anywhere in the article.
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CybersecurityNews
Apache HTTP Server 2.4.64 Released With Patch for 8 Vulnerabilities
The Apache Software Foundation has released Apache HTTP Server version 2.4.64, addressing eight critical security vulnerabilities that affected versions spanning from 2.4.0 through 2.4.63. This latest ... Read more
The following table lists the changes that have been made to the
CVE-2025-49630 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Jul. 10, 2025
Action Type Old Value New Value Added 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". Added CWE CWE-617 Added Reference https://httpd.apache.org/security/vulnerabilities_24.html
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-49630 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-49630
weaknesses.