VDB
ALPINE-CVE-2021-22898
ALPINE-CVE-2021-22898
PUBLISHED
CVSS 3.0999999046325684 LOW
curl 7.7 through 7.76.1 suffers from an information disclosure when the `-t` command line option, known as `CURLOPT_TELNETOPTIONS` in libcurl, is used to send variable=content pairs to TELNET servers. Due to a flaw in the option parser for sending NEW_ENV variables, libcurl could be made to pass on uninitialized data from a stack based buffer to the server, resulting in potentially revealing sensitive internal information to the server using a clear-text network protocol.
Risk Scores
CVSS v3.1
3.0999999046325684
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.22 | curl | 7.69.0-r1, 7.22.0-r0, 7.69.0-r0 |
| Alpine:v3.13 | curl | 7.47.0-r0, 7.19.2-r0, 7.19.4-r0 |
| Alpine:v3.20 | curl | 7.53.1-r0, 7.22.0-r0, 7.36.0-r0 |
| Alpine:v3.11 | curl | 7.25.0-r0, 7.67.0-r3, 7.67.0-r2 |
| Alpine:v3.18 | curl | 7.70.0-r0, 0, 7.19.2-r0 |
| Alpine:v3.19 | curl | 7.31.0-r0, 7.19.2-r0, 7.19.2-r1 |
| Alpine:v3.21 | curl | 7.29.0-r0, 7.19.5-r0, 0 |
| Alpine:v3.23 | curl | 7.73.0-r0, 7.74.0-r0, 7.75.0-r0 |
| Alpine:v3.15 | curl | 7.63.0-r0, 7.19.4-r0, 7.19.5-r0 |
| Alpine:v3.12 | curl | 7.59.0-r1, 7.60.0-r0, 7.60.0-r1 |
| Alpine:v3.17 | curl | 7.71.0-r0, 7.76.1-r0, 7.76.0-r0 |
| Alpine:v3.10 | curl | 7.66.0-r3, 7.19.2-r0, 7.19.2-r1 |
| Alpine:v3.14 | curl | 7.49.1-r0, 7.76.1-r0, 7.76.0-r0 |
| Alpine:v3.16 | curl | 7.21.1-r0, 7.68.0-r0, 7.19.4-r0 |
Timeline
- Jun 11, 2021 CVE Published
- Dec 3, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch