CVE-2026-16639
Last modified
CVE-2026-16639 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Internationalization Single Sign-On allows Authentication Bypass. This issue affects Internationalization Single Sign-On versions: from 0.0.0 to 1.8.0.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.
Description
Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Internationalization Single Sign-On allows Authentication Bypass. This issue affects Internationalization Single Sign-On versions: from 0.0.0 to 1.8.0.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Drupal | Internationalization Single Sign-On | >= 0.0.0, < 1.8.0 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-16639?
How severe is CVE-2026-16639?
How do I fix CVE-2026-16639?
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-2026-16633### Impact If PDF.js is used to load a malicious PDF, and P…8.6
- CVE-2026-16634TOML::XS versions before 0.06 for Perl bundle an unsupported…9.8
- CVE-2026-16635The Pronamic Pay plugin for WordPress is vulnerable to Privi…8.8
- CVE-2026-16636The FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, M…7.2
- CVE-2026-16637OPeNDAP Hyrax allows SSRF and credential disclosure via unva…6.5
- CVE-2026-16638Improper Neutralization of Input During Web Page Generation …6.1
- CVE-2026-1664Summary An Insecure Direct Object Reference has been found …6.9
- CVE-2026-16640Improper Neutralization of Input During Web Page Generation …6.1
- CVE-2026-16641Vulnerability in Drupal Commerce Elavon. This issue affects …9.8
- CVE-2026-16642Vulnerability in Drupal Email Login OTP. This issue affects …5.7
- CVE-2026-16643Vulnerability in Drupal Lunr exposed filters. This issue aff…5.7
- CVE-2026-16644Incorrect Authorization vulnerability in Drupal Webform REST…9.1
Are you affected by CVE-2026-16639?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST