CVE-2026-33349

medium Red Hat
CVSS v3 Base Score
5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: March 24, 2026 (50 days ago)
Last Modified: March 24, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in fast-xml-parser. A remote attacker can exploit this vulnerability by providing specially crafted XML input to an application using the affected library. The DocTypeReader component incorrectly processes configuration limits for entity counts and sizes when these limits are explicitly set to zero, bypassing intended restrictions. This oversight allows for unbounded entity expansion, consuming excessive memory and leading to a Denial of Service (DoS) condition, which makes the application unavailable to legitimate users.

CWE

CWE-1284

Affected Products

Migration Toolkit for Applications 8Red Hat Advanced Cluster Security 4Red Hat Data Grid 8Red Hat Developer HubRed Hat OpenShift AI (RHOAI)Red Hat Openshift Data Foundation 4Red Hat OpenShift GitOpsRed Hat OpenShift Virtualization 4Red Hat Satellite 6Self-service automation portal 2

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 github.com 🔗 github.com