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CVE-20XX-?

CVE-2026-16639

9.8 CRITICAL 0.6% exploit odds No fix listed Auth & access Web app

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 0.6% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-07-22 17:06 UTC ReservedThe CVE id was reserved by its CNA
2026-08-25 23:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-08-28 15:29 UTC Last updatedMost recent change to the record

Details

Published: 2026-08-25 23:16 UTC
Last modified: 2026-08-28 15:29 UTC
Exploit probability: 0.6% · EPSS, next 30 days
Weakness: CWE-288
Record status: Awaiting Analysis

Attack profile CVSS 3.1 · 9.8

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Meme: I wake up, CVE-2026-16639

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References

https://www.drupal.org/sa-contrib-2026-081

NVD record · CVE.org record