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DEBIAN-CVE-2025-49630

DEBIAN-CVE-2025-49630 PUBLISHED CVSS 7.5 HIGH

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".

Risk Scores

CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

VendorProductVersions
Debian:14apache20, 0
Debian:13apache20, 0
Debian:12apache2*, 0, 2.4.57-2
Debian:11apache22.4.57-2, 2.4.64-1, 2.4.62-3

Timeline

  • Jul 10, 2025 CVE Published
  • Apr 28, 2026 CVE Updated
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