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CVE-2021-22876

Published: 4/1/2021 Last updated: 6/9/2025 Reserved: 1/6/2021

curl 7.1.1 to and including 7.75.0 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.

CNA assigner: hackerone (36234546-b8fa-4601-9d6f-f4e334aa8ea1) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 5.3 Medium CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Opam packages affected (3)

conf-libcurl conf-mingw-w64-curl-i686 conf-mingw-w64-curl-x86_64

Products affected (1)

Product Vendor Version
https://github.com/curl/curl n/a Snapdragon 8+ Gen 1 Mobile Platform

References (20)