vulnerability
FreeBSD: VID-b1194286-958e-11eb-9c34-080027f515ea (CVE-2021-22876): curl -- Automatic referer leaks credentials
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:P/I:N/A:N) | Apr 10, 2021 | Nov 4, 2022 | Dec 10, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
Apr 10, 2021
Added
Nov 4, 2022
Modified
Dec 10, 2025
Description
Daniel Stenberg reports: libcurl does not strip off user credentials from the URL when automatically populating the Referer: HTTP request header field in outgoing HTTP requests, and therefore risks leaking sensitive data to the server that is the target of the second HTTP request. libcurl automatically sets the Referer: HTTP request header field in outgoing HTTP requests if the CURLOPT_AUTOREFERER option is set. With the curl tool, it is enabled with --referer ";auto".
Solution
freebsd-upgrade-package-curl
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