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CLEANSTART-2026-LU55702 When multiple server blocks are configured to share the same IP address and port, an attacker can use session resumption to bypass client certificate authentication requirements on these servers

🗓️ 30 Oct 2026 13:28:50Reported by GoogleType 
osv_cleanstart
 osv_cleanstart🔗 osv.dev👁 10 Views

Session resumption in ingress-nginx-controller allows bypassing client certificate auth.

Related
Refs
ReporterTitlePublishedViews
Family
ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in nginx affects IBM Netezza Appliance
24 Dec 202509:18
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Vulnerabilities exists in IBM Netezza Performance Server Replication Services
27 Feb 202619:55
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Security vulnerability in nginx affects IBM Robotic Process Automation for Cloud Pak
23 Mar 202613:58
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM Maximo Application Suite - Visual Inspection component was using python,nginx and packages which were vulnerable to CVE-2025-4435, CVE-2025-23419, CVE-2025-4330, CVE-2025-4138, CVE-2025-47273
6 Feb 202606:19
–ibm
githubexploit
GithubExploit		tls-vuln-poc
21 Oct 202613:54
–githubexploit
freebsd
FreeBSD		nginx-devel -- SSL session reuse vulnerability
5 Feb 202500:00
–freebsd
nessus
Tenable Nessus		Amazon Linux 2023 : nginx, nginx-all-modules, nginx-core (ALAS2023-2025-842)
26 Feb 202500:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2 : nginx (ALASNGINX1-2025-008)
28 Mar 202500:00
–nessus
nessus
Tenable Nessus		Azure Linux 3.0 Security Update: nginx (CVE-2025-23419)
21 Feb 202500:00
–nessus
nessus
Tenable Nessus		Rocky Linux 9.2 [CIQ] Security Update: nginx / nginx-all-modules / nginx-core / nginx-filesystem / etc Multiple Vulnerabilities (ciqsa-2026_1563)
1 Oct 202600:00
–nessus
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31 Oct 2026 01:00Current
6.3Medium risk
Vulners AI Score6.3
CVSS 3.14.3
CVSS 45.3
EPSS0.02795
ingress-nginx-controllersession resumptionclient certificate authenticationbypass
10