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CVE-2021-22876 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CNA: CISA-ADPCVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf	CVE	PatchThird Party Advisory
https://curl.se/docs/CVE-2021-22876.html	CVE	PatchVendor Advisory
https://hackerone.com/reports/1101882	CVE	ExploitIssue TrackingPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00019.html	CVE	Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2ZC5BMIOKLBQJSFCHEDN2G2C2SH274BP/	CVE	Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVWPVGLFISU5BJC2BXBRYSDXTXE2YGC/	CVE	Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQUIOYX2KUU6FIUZVB5WWZ6JHSSYSQWJ/	CVE	Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202105-36	CVE	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210521-0007/	CVE	Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html	CVE	Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf	[email protected]	PatchThird Party Advisory
https://curl.se/docs/CVE-2021-22876.html	[email protected]	PatchVendor Advisory
https://hackerone.com/reports/1101882	[email protected]	ExploitIssue TrackingPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00019.html	[email protected]	Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2ZC5BMIOKLBQJSFCHEDN2G2C2SH274BP/	[email protected]	Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVWPVGLFISU5BJC2BXBRYSDXTXE2YGC/	[email protected]	Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQUIOYX2KUU6FIUZVB5WWZ6JHSSYSQWJ/	[email protected]	Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202105-36	[email protected]	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210521-0007/	[email protected]	Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html	[email protected]	Third Party Advisory

see all 20 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-200	Exposure of Sensitive Information to an Unauthorized Actor	[email protected]
CWE-359	Exposure of Private Personal Information to an Unauthorized Actor	[email protected]

Affected Products

Product	Versions
haxx libcurl	>= 7.1.1, <= 7.75.0
CPE cpe:2.3:a:haxx:libcurl:::::::: Remediation No remediation found in references.
fedoraproject fedora	32 33 34
CPE cpe:2.3:o:fedoraproject:fedora:32:::::::* cpe:2.3:o:fedoraproject:fedora:33:::::::* cpe:2.3:o:fedoraproject:fedora:34:::::::* Remediation No remediation found in references.
netapp hci management node	All versions
CPE cpe:2.3:a:netapp:hci_management_node:-:::::::* Remediation No remediation found in references.
netapp solidfire	All versions
CPE cpe:2.3:a:netapp:solidfire:-:::::::* Remediation No remediation found in references.
netapp hci compute node	All versions
CPE cpe:2.3:h:netapp:hci_compute_node:-:::::::* Remediation No remediation found in references.
netapp hci storage node	All versions
CPE cpe:2.3:h:netapp:hci_storage_node:-:::::::* Remediation No remediation found in references.
broadcom fabric operating system	All versions
CPE cpe:2.3:o:broadcom:fabric_operating_system:-:::::::* Remediation No remediation found in references.
debian debian linux	9.0
CPE cpe:2.3:o:debian:debian_linux:9.0:::::::* Remediation No remediation found in references.
siemens sinec infrastructure network services	< 1.0.1.1
CPE cpe:2.3:a:siemens:sinec_infrastructure_network_services:::::::: Remediation No remediation found in references.
oracle communications billing and revenue management	12.0.0.3.0
CPE cpe:2.3:a:oracle:communications_billing_and_revenue_management:12.0.0.3.0:::::::* Remediation No remediation found in references.
oracle essbase	21.2
CPE cpe:2.3:a:oracle:essbase:21.2:::::::* Remediation No remediation found in references.
splunk universal forwarder	>= 8.2.0, < 8.2.12 >= 9.0.0, < 9.0.6 9.1.0
CPE cpe:2.3:a:splunk:universal_forwarder:::::::: cpe:2.3:a:splunk:universal_forwarder:9.1.0:::::::* Remediation No remediation found in references.

Change History

19 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	[email protected]
Jun 9, 2025	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Mar 27, 2024	Modified Analysis	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Apr 6, 2022	Modified Analysis	[email protected]
Mar 10, 2022	CVE Modified	[email protected]
Jul 20, 2021	CVE Modified	[email protected]
Jun 15, 2021	Reanalysis	[email protected]
May 27, 2021	Modified Analysis	[email protected]
May 26, 2021	CVE Modified	[email protected]
May 21, 2021	CVE Modified	[email protected]
May 17, 2021	CVE Modified	[email protected]
Apr 22, 2021	CVE Modified	[email protected]
Apr 6, 2021	Initial Analysis	[email protected]
Apr 6, 2021	CVE Modified	[email protected]
Apr 4, 2021	CVE Modified	[email protected]

CVE-2021-22876 Details

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