ALPINE-CVE-2021-22946

ALPINE-CVE-2021-22946

This page contains facts from public vulnerability sources. Check the original advisory before updating.

A user can tell curl >= 7.20.0 and <= 7.78.0 to require a successful upgrade to TLS when speaking to an IMAP, POP3 or FTP server (`--ssl-reqd` on the command line or`CURLOPT_USE_SSL` set to `CURLUSESSL_CONTROL` or `CURLUSESSL_ALL` withlibcurl). This requirement could be bypassed if the server would return a properly crafted but perfectly legitimate response.This flaw would then make curl silently continue its operations **withoutTLS** contrary to the instructions and expectations, exposing possibly sensitive data in clear text over the network.

CVSS 7.5 · High · Fix available

Published

2021-09-29T20:15:08.187Z

Updated

2026-10-23T17:17:56.154499179Z

Stack: system

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