CVE-2025-49630

7.5 highEPSS 1.4%

High (7.5) in apache http server. EPSS 1.4% chance of exploitation in the next 30 days.

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".

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 1.4% chance of exploitation in the next 30 days; higher than 71% of CVEs (scores of 2026-10-31)
CWE: CWE-617
Published: 2025-07-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

apache:http_server

References

https://httpd.apache.org/security/vulnerabilities_24.html
http://www.openwall.com/lists/oss-security/2025/07/10/2
http://www.openwall.com/lists/oss-security/2025/07/10/7
https://lists.debian.org/debian-lts-announce/2025/08/msg00009.html

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