#VU123888 Authentication Bypass by Primary Weakness in cURL - CVE-2026-1965
Published: March 11, 2026
Vulnerability identifier: #VU123888
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-1965
CWE-ID: CWE-305
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
cURL
cURL
Software vendor:
curl.haxx.se
curl.haxx.se
Description
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to improper reuse of HTTP Negotiate connection. A remote attacker can bypass authentication and gain access to the target system.
Remediation
Install updates from vendor's website.