CVE-2025-66567

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Source

https://nvd.nist.gov/vuln/detail/CVE-2025-66567

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66567.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2025-66567

Aliases

GHSA-9v8j-x534-2fx3

Downstream

UBUNTU-CVE-2025-66567

Related

Published

2025-12-09T01:55:06.296Z

Modified

2025-12-12T02:58:21.680842Z

Severity

9.3 (Critical) CVSS_V4 - 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 CVSS Calculator

Summary

ruby-saml has a SAML authentication bypass due to namespace handling (parser differential)

Details

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.

Database specific

{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66567.json",
    "cwe_ids": [
        "CWE-347"
    ]
}

References

Affected packages

Git / github.com/onelogin/ruby-saml

Affected ranges

Type: GIT
Repo: https://github.com/onelogin/ruby-saml
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

6a7c040049babe748ee1bb4ca13898c47189114c

Affected versions

0.*

0.7.3

0.8.0

0.8.1

1.*

1.3.1

1.4.0

1.4.1

1.4.2

1.4.3

1.5.0

v0.*

v0.2.0

v0.2.1

v0.2.2

v0.2.3

v0.3.0

v0.3.1

v0.3.2

v0.3.3

v0.3.4

v0.4.0

v0.4.1

v0.4.2

v0.4.3

v0.4.4

v0.4.5

v0.4.6

v0.4.7

v0.5.0

v0.5.1

v0.5.2

v0.5.3

v0.6.0

v0.7.1

v0.9

v0.9.1

v0.9.2

v1.*

v1.0.0

v1.1.0

v1.1.1

v1.1.2

v1.10.0

v1.10.1

v1.10.2

v1.11.0

v1.12.0

v1.12.1

v1.12.2

v1.13.0

v1.14.0

v1.15.0

v1.16.0

v1.17.0

v1.2.0

v1.3.0

v1.6.0

v1.6.1

v1.6.2

v1.7.0

v1.7.1

v1.7.2

v1.8.0

v1.9.0

Git / github.com/saml-toolkits/ruby-saml