CVE-2021-22876
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.
- CVSS 3.1
- 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - EPSS
- 5.3% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-25)
- CWEs
- CWE-200, CWE-359
- Published
- Modified
- Record from
- the NVD, synced
Affected
- broadcom:fabric_operating_system
- debian:debian_linux
- fedoraproject:fedora
- haxx:libcurl
- netapp:hci_compute_node
- netapp:hci_management_node
- netapp:hci_storage_node
- netapp:solidfire
- oracle:communications_billing_and_revenue_management
- oracle:essbase
- siemens:sinec_infrastructure_network_services
- splunk:universal_forwarder
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://curl.se/docs/CVE-2021-22876.html
- https://hackerone.com/reports/1101882
- https://lists.debian.org/debian-lts-announce/2021/05/msg00019.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2ZC5BMIOKLBQJSFCHEDN2G2C2SH274BP/