CVE-2021-22898
Published: Jun 11, 2021
Modified: Apr 16, 2026
Description
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.
| Vendor | Product | Versions |
|---|---|---|
n/a | https://github.com/curl/curl | affected 7.7 through 7.76.1 |
Weaknesses (CWE)
References
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