CVE-2025-25293

HIGH
2025-03-12 [email protected]
7.7
CVSS 4.0
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CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

4
Analysis Generated
Mar 28, 2026 - 18:31 vuln.today
Patch Released
Mar 28, 2026 - 18:31 nvd
Patch available
PoC Detected
Nov 03, 2025 - 20:17 vuln.today
Public exploit code
CVE Published
Mar 12, 2025 - 21:15 nvd
HIGH 7.7

Tags

Denial Of Service Omniauth Saml Ruby Saml

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.

Analysis

ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Rated high severity (CVSS 7.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical Context

This vulnerability is classified as Uncontrolled Resource Consumption (CWE-400), which allows attackers to cause denial of service by exhausting system resources. 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. Affected products include: Omniauth Omniauth Saml, Onelogin Ruby-Saml.

Affected Products

Omniauth Omniauth Saml, Onelogin Ruby-Saml.

Remediation

A vendor patch is available. Apply the latest security update as soon as possible. Implement rate limiting, set resource quotas, validate input sizes, use timeouts.

Priority Score

61
Low Medium High Critical
KEV: 0
EPSS: +2.7
CVSS: +38
POC: +20

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CVE-2025-25293 vulnerability details – vuln.today
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