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Critical 9.8Published Aug 25, 2026
CVE-2026-16639Internationalization Single Sign-On - Critical - Access bypass - SA-CONTRIB-2026-081
Updated under an hour ago ()
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It affects Drupal Internationalization Single Sign-On. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-288
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- drupal
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 26, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Drupal Internationalization Single Sign-On drupal:internationalization_single_sign_on (from the name) | from 0.0.0 before 1.8.0 | CNA record |
References
- https://www.drupal.org/sa-contrib-2026-081
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.