CVE-2025-3225CWE-776

XML Entity Expansion vulnerability in run-llama/llama_index

High · published July 7, 2025

CVSS v3.0
7.5
EPSS
0%
Percentile
40.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.0
7.5 · HIGH
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00478 · 40.3th percentile
Weakness
CWE-776 · Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
Published
2025-07-07T09:54Z
EPSS history
Timeline
  • 07 JUL 09:54Z
    XML Entity Expansion vulnerability in run-llama/llama_index
    cvelistv5