CVE catalog
CVE-2025-25291
RubySAML vulnerabilities
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 20.96% · Oct 25, 2026
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. An authentication bypass vulnerability was found in ruby-saml prior to versions 1.12.4 and 1.18.0 due to a parser differential. ReXML and Nokogiri parse XML differently; the parsers can generate entirely different document structures from the same XML input. That allows an attacker to be able to execute a Signature Wrapping attack. This issue may lead to authentication bypass. Versions 1.12.4 and 1.18.0 fix the issue.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | ruby-saml | bookworm | 1.13.0-1+deb12u1 | vulnerable |
| Debian | ruby-saml | bookworm-security | 1.13.0-1+deb12u1 | vulnerable |
| Ubuntu | ruby-saml | noble | Not reported | vulnerable |
| Ubuntu | ruby-saml | noble | 1.15.0-1ubuntu0.24.04.1+esm1 | fixed |
| Ubuntu | ruby-saml | pro | 1.15.0-1 | vulnerable |
| Ubuntu | ruby-saml | pro | 1.15.0-1ubuntu0.24.04.1 | vulnerable |
| Ubuntu | ruby-saml | pro | 1.15.0-1ubuntu0.24.04.1+esm1 | fixed |
| Ubuntu | ruby-saml | pro | 1.15.0-1 | vulnerable |
| Ubuntu | ruby-saml | pro | 1.15.0-1ubuntu0.24.04.1 | vulnerable |
| Ubuntu | ruby-saml | pro | 1.15.0-1ubuntu0.24.04.1+esm1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | ruby-saml | source | bookworm | (unfixed) | end-of-life | Not reported | [1100441] |
| Ubuntu | ruby-saml | deb | noble | 1.15.0-1ubuntu0.24.04.1+esm1 | Not reported | Not reported | Not reported |
| Ubuntu | ruby-saml | deb | pro | 1.15.0-1ubuntu0.24.04.1+esm1 | Not reported | USN-7409-1 | Not reported |
| Ubuntu | ruby-saml | deb | pro | 1.15.0-1ubuntu0.24.04.1+esm1 | Not reported | UBUNTU-CVE-2025-25291 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [ruby-saml]Affected
Details (4)
1.13.0-1+deb12u1· all · bookwormAffected
usn · ruby-saml · debian · bookworm; usn · ruby-saml · debian · 12
1.13.0-1+deb12u1· all · bookwormAffected
usn · ruby-saml · debian · bookworm; usn · ruby-saml · debian · 12
1.13.0-1+deb12u1· all · bookworm-securityAffected
usn · ruby-saml · debian · bookworm; usn · ruby-saml · debian · 12
1.13.0-1+deb12u1· all · bookworm-securityAffected
usn · ruby-saml · debian · bookworm; usn · ruby-saml · debian · 12
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2025-25291]
- [https://osv.dev/vulnerability/DLA-4115-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2025-25291]
- [https://osv.dev/vulnerability/USN-7409-1]
- [https://security-tracker.debian.org/tracker/CVE-2025-25291]
- [https://ubuntu.com/security/notices/USN-7409-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-0561.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Ubuntu Security Notices (USN)]