P4Verified

CVE-2025-66567: ruby-saml before 1.18.0 (exclusive), < 1.18.0

CVE-2025-66567. CVSS 3.1 base score 9.1 (CRITICAL, NVD). EPSS 0.00392 (percentile 0.31474), scored 13-Oct-2026.

Affected technology

ruby-saml · before 1.18.0 (exclusive)
onelogin

ruby-saml · < 1.18.0
SAML-Toolkits

Description’s affected range: versions up to and including 1.12.4

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

The source reports that an attacker could get past authentication checks. Vendor/CNA’s CVSS 4.0 assessment (base score 9.3/10) rates confidentiality and integrity impact as high; availability impact as none.

Published 15-Oct-2026 01:10 UTC

CWE: CWE-347
CCR priority: 36.5 /100 (P4)
CVSS 3.1: 9.1 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N · NVD
EPSS: 0.00392 · percentile 0.31474 · 2026-10-13
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-15 01:07:31.726917+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-66567.html