CVE catalog
CVE-2025-25293
RubySAML vulnerabilities
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.53% · Oct 25, 2026
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Prior to versions 1.12.4 and 1.18.0, ruby-saml is susceptible to remote Denial of Service (DoS) with compressed SAML responses. ruby-saml uses zlib to decompress SAML responses in case they're compressed. It is possible to bypass the message size check with a compressed assertion since the message size is checked before inflation and not after. This issue may lead to remote Denial of Service (DoS). 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 |
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 | UBUNTU-CVE-2025-25293 | 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-2025-25293]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2025-25293]
- [https://security-tracker.debian.org/tracker/CVE-2025-25293]
- [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)]