VYPR
Medium severityOSV Advisory· Published Jul 30, 2025· Updated Apr 15, 2026

CVE-2025-54572

CVE-2025-54572

Description

The Ruby SAML library is for implementing the client side of a SAML authorization. In versions 1.18.0 and below, a denial-of-service vulnerability exists in ruby-saml even with the message_max_bytesize setting configured. The vulnerability occurs because the SAML response is validated for Base64 format prior to checking the message size, leading to potential resource exhaustion. This is fixed in version 1.18.1.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
ruby-samlRubyGems
< 1.18.11.18.1

Affected products

20

Patches

Vulnerability mechanics

References

8

News mentions

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