HOME VULNERABILITIESCVE-2025-25293

HIGH

CVE-2025-25293

CWE-400Published: March 12, 2025· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

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.

Technical Analysis

CVE-2025-25293 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

omniauth1 product(s)

omniauth saml

onelogin1 product(s)

ruby-saml

Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://about.gitlab.com/releases/2025/03/12/patch-release-gitlab-17-9-2-released

PATCHhttps://github.com/SAML-Toolkits/ruby-saml/commit/acac9e9cc0b9a507882c614f25d41f8b47be349a

PATCHhttps://github.com/SAML-Toolkits/ruby-saml/commit/e2da4c6dae7dc01a4d9cd221395140a67e2b3eb1

ADVISORYhttps://github.blog/security/sign-in-as-anyone-bypassing-saml-sso-authentication-with-parser-differentials

ADVISORYhttps://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-92rq-c8cf-prrq

ADVISORYhttps://github.com/omniauth/omniauth-saml/security/advisories/GHSA-hw46-3hmr-x9xv

ADVISORYhttps://securitylab.github.com/advisories/GHSL-2024-355_ruby-saml

ADVISORYhttps://security.netapp.com/advisory/ntap-20250314-0008/

All References (11)

→

https://about.gitlab.com/releases/2025/03/12/patch-release-gitlab-17-9-2-releasedPatch

→

https://github.blog/security/sign-in-as-anyone-bypassing-saml-sso-authentication-with-parser-differentialsExploit · Third Party Advisory

→

https://github.com/SAML-Toolkits/ruby-saml/commit/acac9e9cc0b9a507882c614f25d41f8b47be349aPatch

→

https://github.com/SAML-Toolkits/ruby-saml/commit/e2da4c6dae7dc01a4d9cd221395140a67e2b3eb1Patch

→

https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.12.4Release Notes

→

https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.0Release Notes

→

https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-92rq-c8cf-prrqVendor Advisory

→

https://github.com/omniauth/omniauth-saml/security/advisories/GHSA-hw46-3hmr-x9xvVendor Advisory

→

https://securitylab.github.com/advisories/GHSL-2024-355_ruby-samlExploit · Third Party Advisory

→

https://lists.debian.org/debian-lts-announce/2025/04/msg00011.html

→

https://security.netapp.com/advisory/ntap-20250314-0008/Third Party Advisory

Quick Facts

CVE IDCVE-2025-25293

CVSS Score7.5 / 10

SeverityHIGH

WeaknessCWE-400

CISA KEVNo

Affected2 vendor(s)

PublishedMar 12, 2025

Related CVEs (CWE-400)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2025-25293 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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