CVE-2025-49630

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-49630
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".

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://httpd.apache.org/security/vulnerabilities_24.html Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
History

29 Jul 2025, 15:11

Type Values Removed Values Added
First Time Apache http Server
Apache
CPE cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
References () https://httpd.apache.org/security/vulnerabilities_24.html - () https://httpd.apache.org/security/vulnerabilities_24.html - Vendor Advisory

15 Jul 2025, 20:15

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5

15 Jul 2025, 13:24

Type Values Removed Values Added
Summary
  • (es) En ciertas configuraciones de proxy, un ataque de denegación de servicio contra Apache HTTP Server, versiones 2.4.26 a 2.4.63, puede ser provocado por clientes no confiables que generen una aserción en mod_proxy_http2. Las configuraciones afectadas son las que tienen un proxy inverso configurado para un backend HTTP/2, con ProxyPreserveHost activado.

10 Jul 2025, 17:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-07-10 17:15

Updated : 2025-07-29 15:11

NVD link : CVE-2025-49630

Mitre link : CVE-2025-49630

CVE.ORG link : CVE-2025-49630

JSON object : View

Products Affected

apache

  • http_server
CWE
CWE-617

Reachable Assertion