CVE-2026-7168

Successfully using libcurl to do a transfer over a specific HTTP proxy (`proxyA`) with **Digest** authentication and then changing the proxy host to a second one (`proxyB`) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the `Proxy-Authorization:` header field meant for `proxyA`, to `proxyB`.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://curl.se/docs/CVE-2026-7168.html	Patch Vendor Advisory
https://curl.se/docs/CVE-2026-7168.json	Vendor Advisory
https://hackerone.com/reports/3697719	Exploit Issue Tracking
http://www.openwall.com/lists/oss-security/2026/04/29/14	Mailing List Patch
https://hackerone.com/reports/3697719	Exploit Issue Tracking

Configurations

Configuration 1 (hide)

cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-13 13:01

Updated : 2026-09-15 07:16

NVD link : CVE-2026-7168

Mitre link : CVE-2026-7168

CVE.ORG link : CVE-2026-7168

JSON object : View

Products Affected

haxx

curl

CWE

CWE-294

Authentication Bypass by Capture-replay

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