🛡️ CVE-2025-3225 — llama-index

🟠 CVSS 8.0 — High ✅ No Known Exploit NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

LlamaIndex has an XML Entity Expansion vulnerability in its sitemap parser

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 the Papers Loaders package before version 0.3.2 (in llama-index v0.10.0 and above through v0.12.29). 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 0.3.2 (in llama-index 0.12.29).

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

CVE-2025-3225 is recorded against 3 packages.

  • llama-index (from 0.12.21 up to 0.12.29)
  • llama-index-readers-papers (fixed in 0.3.2)
  • llamaindex (from 0.12.21 up to 0.12.29)

Timeline and source

Published on 7 July 2025 and last revised on 13 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com (Fix)
huntr.com (Evidence)

Details

Severity High
CVSS Score 8.0
CVSS Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-07-07
Updated 2026-08-12
Modified 2026-07-13

Affected Packages

Software From version Fixed in
llama-index 0.12.21 0.12.29
llama-index-readers-papers — 0.3.2
llamaindex 0.12.21 0.12.29

Similar Threats

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