HIGH7.5
PYSEC-2026-1570
LlamaIndex has an XML Entity Expansion vulnerability in its sitemap parser
Quick fix
PYSEC-2026-1570 — llama-index-readers-papers: upgrade to the fixed version with the command below.
pip install --upgrade 'llama-index-readers-papers>=0.3.2'Details
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).
Are you affected?
Enter the version of the package you're using.
Affected packages
PyPI/llama-index-readers-papers
Introduced in:
0Fixed in: 0.3.2Fix
pip install --upgrade 'llama-index-readers-papers>=0.3.2'References
- https://nvd.nist.gov/vuln/detail/CVE-2025-3225[ADVISORY]
- https://github.com/run-llama/llama_index/commit/4f6ee062b19212106a2632af9c9521fc7f0a3584[WEB]
- https://github.com/run-llama/llama_index[PACKAGE]
- https://huntr.com/bounties/e33c0699-e9a2-49aa-837b-5363205637a2[WEB]
- https://pypi.org/project/llama-index-readers-papers[PACKAGE]
- https://github.com/advisories/GHSA-w42r-mrx7-c633[ADVISORY]