CVE Vulnerabilities

CVE-2025-3225

Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Published: Jul 07, 2025 | Modified: Jul 30, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
5.3 MODERATE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Ubuntu

An XML Entity Expansion vulnerability, also known as a billion laughs attack, exists in the sitemap parser of the run-llama/llama_index repository, specifically affecting version v0.12.21. This vulnerability allows an attacker to supply a malicious Sitemap XML, leading to a Denial of Service (DoS) by exhausting system memory and potentially causing a system crash. The issue is resolved in version v0.12.29.

Weakness

The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities.

Affected Software

Name Vendor Start Version End Version
Llamaindex Llamaindex 0.12.21 (including) 0.12.29 (excluding)

Potential Mitigations

References