CVE-2023-28119: SAML Project SAML

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

The crewjam/saml go library contains a partial implementation of the SAML standard in golang. Prior to version 0.4.13, the package's use of `flate.NewReader` does not limit the size of the input. The user can pass more than 1 MB of data in the HTTP request to the processing functions, which will be decompressed server-side using the Deflate algorithm. Therefore, after repeating the same request multiple times, it is possible to achieve a reliable crash since the operating system kills the process. This issue is patched in version 0.4.13.

Affected products

Published 2023-03-22. Last modified 2026-06-17.