VDB
ALPINE-CVE-2023-27538
ALPINE-CVE-2023-27538
PUBLISHED
CVSS 5.5 MEDIUM
An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequent transfers if the configurations match. However, two SSH settings were omitted from the configuration check, allowing them to match easily, potentially leading to the reuse of an inappropriate connection.
Risk Scores
CVSS v3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.18 | curl | 7.87.0-r2, 7.88.1-r1, 7.88.1-r0 |
| Alpine:v3.14 | curl | 7.19.2-r1, 7.79.1-r5, 7.79.1-r4 |
| Alpine:v3.22 | curl | 7.53.1-r0, 7.88.1-r1, 7.88.1-r0 |
| Alpine:v3.21 | curl | 7.64.0-r0, 7.64.0-r1, 7.64.1-r0 |
| Alpine:v3.20 | curl | 7.79.0-r0, 7.34.0-r1, 7.35.0-r0 |
| Alpine:v3.15 | curl | 7.29.0-r0, 7.45.0-r1, 7.50.2-r0 |
| Alpine:v3.16 | curl | 7.62.0-r1, 7.62.0-r2, 7.63.0-r0 |
| Alpine:v3.19 | curl | 7.19.7-r0, 7.64.0-r0, 7.63.0-r0 |
| Alpine:v3.23 | curl | 7.81.0-r0, 7.82.0-r0, 7.82.0-r1 |
| Alpine:v3.17 | curl | 7.33.0-r1, 7.21.3-r0, 7.64.1-r2 |
Timeline
- Mar 30, 2023 CVE Published
- Dec 3, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch