Memory Leak Affecting python3-lasso package, versions <0:2.9.0-1.amzn2.0.1


Severity

Recommended
critical

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.64% (49th percentile)

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  • Snyk IDSNYK-AMZN2-PYTHON3LASSO-13879822
  • published11 Nov 2025
  • disclosed5 Nov 2025

Introduced: 5 Nov 2025

CVE-2025-46784  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 python3-lasso to version 0:2.9.0-1.amzn2.0.1 or higher.
This issue was patched in ALAS2-2025-3077.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-lasso package and not the python3-lasso package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

A denial of service vulnerability exists in the lasso_node_init_from_message_with_format functionality of Entr&#39;ouvert Lasso 2.5.1. A specially crafted SAML response can lead to a memory depletion, resulting in denial of service. An attacker can send a malformed SAML response to trigger this vulnerability.

CVSS Base Scores

version 3.1