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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
ruby-samlRubyGems | < 1.18.1 | 1.18.1 |
Affected products
20- Range: 0.7.3, 0.8.0, 0.8.1, …
- osv-coords19 versionspkg:apk/chainguard/gitlab-rails-ce-18.1pkg:apk/chainguard/gitlab-rails-ce-18.2pkg:apk/chainguard/gitlab-rails-ce-18.3pkg:apk/chainguard/gitlab-rails-ce-assets-18.1pkg:apk/chainguard/gitlab-rails-ce-assets-18.2pkg:apk/chainguard/gitlab-rails-ce-assets-18.3pkg:apk/chainguard/gitlab-rails-ce-assets-fips-18.1pkg:apk/chainguard/gitlab-rails-ce-assets-fips-18.2pkg:apk/chainguard/gitlab-rails-ce-assets-fips-18.3pkg:apk/chainguard/gitlab-rails-ce-doc-18.1pkg:apk/chainguard/gitlab-rails-ce-doc-18.2pkg:apk/chainguard/gitlab-rails-ce-doc-18.3pkg:apk/chainguard/gitlab-rails-ce-doc-fips-18.1pkg:apk/chainguard/gitlab-rails-ce-doc-fips-18.2pkg:apk/chainguard/gitlab-rails-ce-doc-fips-18.3pkg:apk/chainguard/gitlab-rails-ce-fips-18.1pkg:apk/chainguard/gitlab-rails-ce-fips-18.2pkg:apk/chainguard/gitlab-rails-ce-fips-18.3pkg:gem/ruby-saml
< 18.1.6-r1+ 18 more
- (no CPE)range: < 18.1.6-r1
- (no CPE)range: < 18.2.8-r1
- (no CPE)range: < 18.3.2-r0
- (no CPE)range: < 18.1.6-r1
- (no CPE)range: < 18.2.8-r1
- (no CPE)range: < 18.3.2-r0
- (no CPE)range: < 18.1.6-r2
- (no CPE)range: < 18.2.8-r2
- (no CPE)range: < 18.3.5-r2
- (no CPE)range: < 18.1.6-r1
- (no CPE)range: < 18.2.8-r1
- (no CPE)range: < 18.3.2-r0
- (no CPE)range: < 18.1.6-r2
- (no CPE)range: < 18.2.8-r2
- (no CPE)range: < 18.3.5-r2
- (no CPE)range: < 18.1.6-r2
- (no CPE)range: < 18.2.8-r2
- (no CPE)range: < 18.3.5-r3
- (no CPE)range: < 1.18.1
Patches
Vulnerability mechanics
References
8- github.com/advisories/GHSA-rrqh-93c8-j966ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-54572ghsaADVISORY
- github.com/SAML-Toolkits/ruby-saml/commit/38ef5dd1ce17514e202431f569c4f5633e6c2709nvdWEB
- github.com/SAML-Toolkits/ruby-saml/pull/770nvdWEB
- github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.1nvdWEB
- github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-rrqh-93c8-j966nvdWEB
- github.com/rubysec/ruby-advisory-db/blob/master/gems/ruby-saml/CVE-2025-54572.ymlghsaWEB
- lists.debian.org/debian-lts-announce/2025/09/msg00001.htmlnvdWEB
News mentions
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