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CVE-2025-25293

Onelogin Ruby-saml denial of service

7.5 HIGHPublic exploitEPSS 1.53%
  1. Published12 Mar 2025

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Omniauth Saml≥ 2.0.0 < 2.1.3 · ≥ 2.2.0 < 2.2.3 · < 1.10.6
Onelogin Ruby-saml≥ 1.13.0 < 1.18.0 · < 1.12.4

Remediation

Fixed in
Omniauth Saml≥ 2.1.3
Onelogin Ruby-saml≥ 1.18.0

References

and 1 more references

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Frequently asked

Is CVE-2025-25293 being actively exploited?

CVE-2025-25293 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.53%.

How severe is CVE-2025-25293?

CVE-2025-25293 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 1.53% probability of exploitation.

Which products are affected by CVE-2025-25293?

Affected products include Omniauth Saml, Onelogin Ruby-saml.

How do I fix CVE-2025-25293?

Upgrade affected software to a fixed version, for example Omniauth Saml 2.1.3, Onelogin Ruby-saml 1.18.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-25293 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.