VDB
ALPINE-CVE-2025-49630
ALPINE-CVE-2025-49630
PUBLISHED
CVSS 7.5 HIGH
Record from OSV · Published July 10, 2025
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".
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| apache2 | Alpine:v3.24 | 2.4.64-r0 |
| apache2 | Alpine:v3.23 | 2.4.64-r0 |
| apache2 | Alpine:v3.19 | 2.4.64-r0 |
| apache2 | Alpine:v3.20 | 2.4.64-r0 |
| apache2 | Alpine:v3.22 | 2.4.64-r0 |
| apache2 | Alpine:v3.21 | 2.4.64-r0 |
Risk scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.24 | apache2 | 0 |
| Alpine:v3.23 | apache2 | 2.4.41-r0, 2.2.17-r2, 2.2.17-r3 |
| Alpine:v3.19 | apache2 | 2.2.16-r2, 2.2.17-r0, 2.2.17-r1 |
| Alpine:v3.20 | apache2 | 2.4.28-r0, 2.2.16-r0, 2.2.16-r1 |
| Alpine:v3.22 | apache2 | 2.2.16-r0, 2.2.16-r3, 2.2.17-r0 |
| Alpine:v3.21 | apache2 | 2.2.16-r2, 2.2.17-r1, 2.2.17-r2 |
Timeline
- Jul 10, 2025 CVE Published
- Jun 15, 2026 CVE Updated
- Aug 8, 2026 Distribution Patch
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