CVE-2026-16639

criticalpriority · track · 0OT risk · elevatedEPSS 0.006 · 51 %ileDEUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.64% (51st) EPSS
CVSS 9.8 · critical
Is it mine?
3 products
Check your exposure
Who says so?
2 sources
cert_bund · osv

EPSS · scored 2026-10-28

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

9.8
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9
v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-288US
04

affected products (3)

Products and version ranges known to be affected.

05

advisories (2)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-2474Drupal Module: Mehrere SchwachstellenDeutsch2026-07-22csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Drupal ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen und weitere, nicht näher spezifizierte Angriffe durchzuführen.

  • DRUPAL-CONTRIB-2026-0812026-07-22vendor · osvUS

    In a scenario of a multilingual website with different domain names per language, this module enables you to be automatically connected across the language domains if you are logged on the main language domain. The module doesn't sufficiently validate a short-lived token, allowing an attacker to bypass access control and authenticate as a victim user. This vulnerability is mitigated by the fact that an attacker must appear to originate from the same client IP as the victim.

06

sources

Which sources assert this record, and when.

cert_bundosvNVDCVE.orgMITRE
published 2026-08-25modified 2026-08-28
07

references (1) nvd

External citations — patches, advisories, analysis.

scry

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