CVE-2021-22876: Information Exposure

April 1, 2021 (updated November 9, 2023)

curl to and including is vulnerable to an “Exposure of Private Personal Information to an Unauthorized Actor” by leaking credentials in the HTTP Referer: header. 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.

References

curl.se/docs/CVE-2021-22876.html
nvd.nist.gov/vuln/detail/CVE-2021-22876

Code Behaviors & Features

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