CVE-2025-3225

HIGH

run-llama/llama_index <v0.12.21 - DoS

Title source: llm
STIX 2.1

Description

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.

References (2)

Core 2

Scores

CVSS v3 7.5
EPSS 0.0042
EPSS Percentile 33.0%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-776
Status published
Products (2)
llamaindex/llamaindex 0.12.21 - 0.12.29
pypi/llama-index-readers-papers 0 - 0.3.2PyPI
Published Jul 07, 2025
Tracked Since Feb 18, 2026