VDB
ALPINE-CVE-2025-49812
ALPINE-CVE-2025-49812
PUBLISHED
CVSS 7.400000095367432 HIGH
Record from OSV · Published July 10, 2025
In some mod_ssl configurations on Apache HTTP Server versions through to 2.4.63, an HTTP desynchronisation attack allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade. Only configurations using "SSLEngine optional" to enable TLS upgrades are affected. Users are recommended to upgrade to version 2.4.64, which removes support for TLS upgrade.
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:v3.19 | 2.4.64-r0 |
| apache2 | Alpine:v3.22 | 2.4.64-r0 |
| apache2 | Alpine:v3.20 | 2.4.64-r0 |
| apache2 | Alpine:v3.23 | 2.4.64-r0 |
| apache2 | Alpine:v3.21 | 2.4.64-r0 |
Risk scores
CVSS 3.1
7.400000095367432
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.24 | apache2 | 0 |
| Alpine:v3.19 | apache2 | 2.2.17-r3, 2.2.17-r4, 2.2.17-r5 |
| Alpine:v3.22 | apache2 | 2.2.17-r0, 2.2.16-r3, 2.2.16-r2 |
| Alpine:v3.20 | apache2 | 0, 2.2.16-r0, 2.2.16-r1 |
| Alpine:v3.23 | apache2 | 2.4.57-r0, 2.4.57-r1, 2.4.25-r1 |
| Alpine:v3.21 | apache2 | 2.2.16-r0, 2.2.16-r2, 2.2.16-r3 |
Timeline
- Jul 10, 2025 CVE Published
- Jun 15, 2026 CVE Updated
- Aug 8, 2026 Distribution Patch
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