CVE catalog

CVE-2025-54572

ruby-saml: CVE-2025-54572

[CVE catalog]

Severity
Medium
Published
Source
[NVD] · [CVE record]
EPSS
0.43% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debianruby-samlbookworm1.13.0-1+deb12u1vulnerable
Debianruby-samlbookworm-security1.13.0-1+deb12u1vulnerable
Ubunturuby-samlpro1.15.0-1vulnerable
Ubunturuby-samlpro1.15.0-1ubuntu0.24.04.1vulnerable
Ubunturuby-samlpro1.15.0-1ubuntu0.24.04.1+esm1vulnerable

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debianruby-samlsourcebookworm(unfixed)end-of-lifeNot reportedNot reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [ruby-saml]Affected
    Details (4)

    • 1.13.0-1+deb12u1 · all · bookworm

      Affected

      dsa · ruby-saml · debian · bookworm; dsa · ruby-saml · debian · 12

    • 1.13.0-1+deb12u1 · all · bookworm

      Affected

      dsa · ruby-saml · debian · bookworm; dsa · ruby-saml · debian · 12

    • 1.13.0-1+deb12u1 · all · bookworm-security

      Affected

      dsa · ruby-saml · debian · bookworm; dsa · ruby-saml · debian · 12

    • 1.13.0-1+deb12u1 · all · bookworm-security

      Affected

      dsa · ruby-saml · debian · bookworm; dsa · ruby-saml · debian · 12

Observed:

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]