RubyGems/ruby-saml CVE-2025-54572: medium, EPSS 0.43%

Ruby SAML DOS vulnerability with large SAML response

Action: Upgrade ruby-saml to 1.18.1 or later.

bundle update ruby-saml

Affected

Fixed versions

Sources

• osv: GHSA-rrqh-93c8-j966
• https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-rrqh-93c8-j966
• https://nvd.nist.gov/vuln/detail/CVE-2025-54572
• https://github.com/SAML-Toolkits/ruby-saml/pull/770
• https://github.com/SAML-Toolkits/ruby-saml/commit/38ef5dd1ce17514e202431f569c4f5633e6c2709
• https://github.com/SAML-Toolkits/ruby-saml
• https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.1
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/ruby-saml/CVE-2025-54572.yml
• https://lists.debian.org/debian-lts-announce/2025/09/msg00001.html

CVE-2025-54572 · published 2025-07-30T13:20:05Z · modified 2026-09-10T03:50:26.252859842Z · JSON