CVE-2025-54572 | THREATINT

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.

PUBLISHED Reserved 2025-07-25 | Published 2025-07-30 | Updated 2025-11-03 | Assigner GitHub_M

MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Problem types

CWE-400: Uncontrolled Resource Consumption

CWE-770: Allocation of Resources Without Limits or Throttling

Product status

< 1.18.1

affected

References

lists.debian.org/debian-lts-announce/2025/09/msg00001.html

github.com/...y-saml/security/advisories/GHSA-rrqh-93c8-j966

github.com/SAML-Toolkits/ruby-saml/pull/770

github.com/...ommit/38ef5dd1ce17514e202431f569c4f5633e6c2709

github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.1

cve.org (CVE-2025-54572)

nvd.nist.gov (CVE-2025-54572)

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