VDB
ALPINE-CVE-2023-27535
ALPINE-CVE-2023-27535
PUBLISHED
CVSS 5.900000095367432 MEDIUM
An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.
Risk Scores
CVSS v3.1
5.900000095367432
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.18 | curl | 7.61.1-r0, 7.84.0-r0, 7.48.0-r0 |
| Alpine:v3.16 | curl | 7.64.0-r1, 7.64.1-r0, 7.64.1-r1 |
| Alpine:v3.19 | curl | 7.52.0-r0, 7.51.0-r1, 7.51.0-r0 |
| Alpine:v3.21 | curl | 7.76.1-r0, 7.60.0-r1, 7.61.0-r0 |
| Alpine:v3.22 | curl | 7.52.0-r0, 7.51.0-r1, 7.51.0-r0 |
| Alpine:v3.23 | curl | 7.33.0-r0, 0, 7.19.2-r0 |
| Alpine:v3.20 | curl | 7.67.0-r0, 7.65.3-r0, 7.53.1-r0 |
| Alpine:v3.14 | curl | 7.65.0-r0, 7.53.1-r1, 7.65.1-r0 |
| Alpine:v3.17 | curl | 7.19.5-r0, 7.51.0-r0, 7.71.0-r1 |
| Alpine:v3.15 | curl | 7.79.1-r0, 7.59.0-r1, 7.59.0-r0 |
Timeline
- Mar 30, 2023 CVE Published
- Dec 3, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch