Lucene search
K
Catalog
Vendors
Products
Timeline
Vulnerabilities
Sources
Documentation
Blog
Glossary
FAQ
Brand assets
Assessment
Agents dashboard
Agent Scanning
API Scanning
Assessment API
Alerts
Email notifications
Webhook notifications
Alerts API
SBOM package analysis
API Reference
Support
Settings
Sign in

curl: Negotiate connection reuse with wrong credentials when using CURLAUTH_ANY

🗓️ 02 Apr 2026 21:46:38Reported by anonymous_237Type 
hackerone
 hackerone🔗 hackerone.com👁 20 Views

CVE-2026-1965 fixes reuse of a Negotiate connection with different credentials when CURLAUTH_ANY is used.

Related
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities impacts AIX due to cURL libcurl (CVE-2026-1965, CVE-2026-3783, CVE-2026-3784)
1 Jul 202608:04
–ibm
FreeBSD		curl -- Multiple vulnerabilties
11 Mar 202600:00
–freebsd
ATTACKERKB		CVE-2026-1965
11 Mar 202610:08
–attackerkb
AlpineLinux		CVE-2026-1965
11 Mar 202610:08
–alpinelinux
BDU FSTEC		The vulnerability of the software for interacting with servers via cURL, related to bypassing authentication due to a fundamental error, allows attackers to escalate their privileges.
22 May 202600:00
–bdu_fstec
CBLMariner		CVE-2026-1965 affecting package curl for versions less than 8.11.1-6
16 Apr 202602:25
–cbl_mariner
Circl		CVE-2026-1965
11 Mar 202606:56
–circl
CNNVD		curl 安全漏洞
11 Mar 202600:00
–cnnvd
curl security advisories		bad reuse of HTTP Negotiate connection
11 Mar 202608:00
–curl
IBM AIX		Multiple vulnerabilities impacts AIX due to cURL libcurl (CVE-2025-14819 CVE-2026-1965 CVE-2026-3783 CVE-2026-3784 CVE-2026-5545)
26 Jun 202601:16
–aix
Rows per page

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

Book a live demo
29 Apr 2026 07:16Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.16.5
EPSS0.00259
SSVC
negotiate authenticationconnection reusedifferent credentialsany authenticationkerberos
20