CVE-2026-67693
Last modified
CVE-2026-67693 is a low-severity vulnerability rated 3.7/10 on the CVSS scale. GnuTLS v3.8.13 does not reject end-entity X.509 certificates that contain a contradictory combination of Key Usage (KU) and Extended Key Usage (EKU). NOTE: the Supplier does not consider this an actionable security vulnerability because of its "threat model doesn't consider attacks only possible by modifying anything within the trust boundary (private keys, trusted certificate authorities and their issued certificates including intermediate CAs, etc.)" policy.. EPSS estimates a 0.15% chance of exploitation in the next 30 days.
Description
GnuTLS v3.8.13 does not reject end-entity X.509 certificates that contain a contradictory combination of Key Usage (KU) and Extended Key Usage (EKU). NOTE: the Supplier does not consider this an actionable security vulnerability because of its "threat model doesn't consider attacks only possible by modifying anything within the trust boundary (private keys, trusted certificate authorities and their issued certificates including intermediate CAs, etc.)" policy.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| — | — | n/a |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-67693?
How severe is CVE-2026-67693?
How do I fix CVE-2026-67693?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-67678File Upload vulnerability in RainyGao-Hithub DocSys v.2.02.8…9.8
- CVE-2026-6768Mitigation bypass in the Networking: Cookies component. This…9.8
- CVE-2026-67687Insecure Permissions vulnerability in ics-park v.2.0 allows …8.8
- CVE-2026-67688ICS-Park Smart Park Management System v2.0 contains an unres…9.8
- CVE-2026-67689SQL Injection vulnerability in FineAdmin V1.0 allows a remot…9.8
- CVE-2026-6769Privilege escalation in the Debugger component. This vulnera…8.8
- CVE-2026-6770Other issue in the Storage: IndexedDB component. This vulner…6.5
- CVE-2026-6771Mitigation bypass in the DOM: Security component. This vulne…9.8
- CVE-2026-6772Incorrect boundary conditions in the Libraries component in …7.5
- CVE-2026-6773Denial-of-service due to integer overflow in the Graphics: W…7.5
- CVE-2026-6774Mitigation bypass in the DOM: Security component. This vulne…5.4
- CVE-2026-6775Incorrect boundary conditions in the WebRTC component. This …5.3
Are you affected by CVE-2026-67693?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST