CVEvulnerability
CVE-2025-49630
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2025-07-10
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-617
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".
Affected configurations
• apache http server (>= 2.4.26 < 2.4.64)
Related
Weakness · CWE (1)
- CWE-617 Reachable Assertion weakness
References
- https://httpd.apache.org/security/vulnerabilities_24.html Vendor Advisory
- http://www.openwall.com/lists/oss-security/2025/07/10/2 www.openwall.com
- http://www.openwall.com/lists/oss-security/2025/07/10/7 www.openwall.com
- https://lists.debian.org/debian-lts-announce/2025/08/msg00009.html lists.debian.org