Resource exhaustion in Saml-toolkits Ruby-saml

CVE-2025-25293

ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Prior to versions 1.12.4 and 1.18.0, ruby-saml is susceptible to remote Denial of Service (DoS) with compressed SAML responses. ruby-saml uses zlib…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.014 (68.0th percentile) — read the EPSS interpretation.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-25293?
CVE-2025-25293 is a vulnerability in Saml-toolkits Ruby-saml, classified under Uncontrolled Resource Consumption. Published 2025-03-12.
Is CVE-2025-25293 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.