CVE-2021-22876

Updated: 2025-08-20 00:41:11.340119

Description:

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.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x MEDIUM 5.0
CVSS Version 3.x MEDIUM 5.3

Status

OS name Project name Version Score Severity Status Errata Last updated

Statement

CentOS 6 ELS curl 7.19.7 5.3 MEDIUM Released CLSA-2021:1617285762 2022-05-05 12:00:20
CentOS 7 ELS curl 7.29.0 5.3 MEDIUM Ignored 2023-09-19 09:30:35 Ignored due to low severity
CentOS 8.4 ELS curl 7.61.1 5.3 MEDIUM Released CLSA-2022:1643198583 2022-04-06 15:56:51
CentOS 8.5 ELS curl 7.61.1 5.3 MEDIUM Not Vulnerable 2022-04-06 15:56:51
CloudLinux 6 ELS curl 7.19.7 5.3 MEDIUM Released 2022-04-06 15:56:51
Debian 10 ELS curl 7.64.0 5.3 MEDIUM Ignored 2025-10-11 00:23:13 Ignored due to low severity
Oracle Linux 6 ELS curl 7.19.7 5.3 MEDIUM Released CLSA-2021:1634922432 2022-04-06 15:56:51
Ubuntu 16.04 ELS curl 7.47.0 5.3 MEDIUM Not Vulnerable 2022-04-06 15:56:51
Ubuntu 18.04 ELS curl 7.58.0-2 5.3 MEDIUM Ignored 2023-03-02 04:04:22 Ignored due to low severity