CVE-2025-66567
Last modified
CVE-2025-66567 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. The ruby-saml library is for implementing the client side of a SAML authorization. ruby-saml versions up to and including 1.12.4 contain an authentication bypass vulnerability due to an incomplete fix for CVE-2025-25292. EPSS estimates a 0.38% chance of exploitation in the next 30 days.
Description
The ruby-saml library is for implementing the client side of a SAML authorization. ruby-saml versions up to and including 1.12.4 contain an authentication bypass vulnerability due to an incomplete fix for CVE-2025-25292. ReXML and Nokogiri parse XML differently, generating entirely different document structures from the same input. This allows an attacker to execute a Signature Wrapping attack. This issue is fixed in version 1.18.0.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Onelogin | Ruby-Saml | < 1.18.0 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2025-66567?
How severe is CVE-2025-66567?
How do I fix CVE-2025-66567?
How Strix Helps
- Same Subject, Wrong User: A Cross-Issuer Account Takeover in n8nStrix found an identity-binding bug in n8n's token-exchange flow enabling account takeover.
- 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 2025
- CVE-2025-66561SysReptor is a fully customizable pentest reporting platform…5.4
- CVE-2025-66562TUUI is a desktop MCP client designed as a tool unitary util…9.6
- CVE-2025-66563Monkeytype is a minimalistic and customizable typing test. I…6.1
- CVE-2025-66564Sigstore Timestamp Authority is a service for issuing RFC 31…7.5
- CVE-2025-66565Fiber Utils is a collection of common functions created for …9.8
- CVE-2025-66566yawkat LZ4 Java provides LZ4 compression for Java. Insuffici…8.2
- CVE-2025-66568The ruby-saml library implements the client side of an SAML …9.1
- CVE-2025-6657PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read Infor…3.3
- CVE-2025-66570cpp-httplib is a C++11 single-file header-only cross platfor…9.8
- CVE-2025-66571UNA CMS versions 9.0.0-RC1 - 14.0.0-RC4 contain a PHP object…9.3
- CVE-2025-66572Loaded Commerce 6.6 contains a client-side template injectio…6.9
- CVE-2025-66573Solstice Pod API (version 5.5, 6.2) contains an unauthentica…7.5
Are you affected by CVE-2025-66567?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST