CVE-2025-3225

Name: CVE-2025-3225
Creator: NVD / NIST
Published: 2025-07-07T10:15:27.047+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.41%

Last modified Jun 17, 2026

CVE-2025-3225 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.41% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

0.41%

33.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-776

Affected Software

Vendor	Product	Versions
Llamaindex	Llamaindex	>= 0.12.21, < 0.12.29

References

https://github.com/run-llama/llama_index/commit/4f6ee062b19212106a2632af9c9521fc7f0a3584Patch
https://huntr.com/bounties/e33c0699-e9a2-49aa-837b-5363205637a2Exploit, Third Party Advisory

Timeline

Published: Jul 7, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-3225?

How severe is CVE-2025-3225?

Severity scoring for CVE-2025-3225 is pending analysis. The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.

How do I fix CVE-2025-3225?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-3225?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST