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.
Published: 2025-07-07
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-20207 LlamaIndex has an XML Entity Expansion vulnerability in its sitemap parser
Github GHSA Github GHSA GHSA-w42r-mrx7-c633 LlamaIndex has an XML Entity Expansion vulnerability in its sitemap parser
History

Wed, 30 Jul 2025 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Llamaindex
Llamaindex llamaindex
CPEs cpe:2.3:a:llamaindex:llamaindex:*:*:*:*:*:*:*:*
Vendors & Products Llamaindex
Llamaindex llamaindex

Sun, 13 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00043}

epss

{'score': 0.00057}


Tue, 08 Jul 2025 00:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 07 Jul 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 07 Jul 2025 10:00:00 +0000

Type Values Removed Values Added
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.
Title XML Entity Expansion vulnerability in run-llama/llama_index
Weaknesses CWE-776
References
Metrics cvssV3_0

{'score': 7.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Subscriptions

Llamaindex Llamaindex
cve-icon MITRE

Status: PUBLISHED

Assigner: @huntr_ai

Published:

Updated: 2025-07-07T14:59:26.842Z

Reserved: 2025-04-03T15:03:26.975Z

Link: CVE-2025-3225

cve-icon Vulnrichment

Updated: 2025-07-07T14:58:08.545Z

cve-icon NVD

Status : Analyzed

Published: 2025-07-07T10:15:27.047

Modified: 2025-07-30T21:24:40.497

Link: CVE-2025-3225

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-07-07T09:54:06Z

Links: CVE-2025-3225 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses