CVE-2025-252937.7HighCWE-400

CVE-2025-25293: ruby-saml vulnerable to Remote Denial of Service (DoS) with compressed SAML responses

SAML-Toolkits · ruby-saml

Vendor fix available · Affected: SAML-Toolkits ruby-saml · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

1.5%probability of exploitation in the next 30 days

75th percentile

050100

Higher than 75% of scored CVEs

7.7HighCVSS 4.0

LowMediumHighCrit.

DescriptionCVE.org

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 products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

SAML-Toolkits · ruby-saml< 1.12.4; >= 1.13.0, < 1.18.0

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Uncontrolled Resource Consumption · Denial of Service
Vendor: SAML-Toolkits
Published: March 2025
Band: Possible (1 to 10%), March 2025

CoverageNo articles yet

No CyberSIXT article names CVE-2025-25293 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.