{"id":"CVE-2025-3225","aliases":["GHSA-w42r-mrx7-c633","PYSEC-2026-1570"],"title":"LlamaIndex has an XML Entity Expansion vulnerability in its sitemap parser","summary":"LlamaIndex has an XML Entity Expansion vulnerability in its sitemap parser","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","vendor":"llama-index-readers-papers","product":"llama-index-readers-papers","ecosystem":"pip","affected":["llama-index-readers-papers < 0.3.2"],"patched":["llama-index-readers-papers 0.3.2"],"published":"2025-07-07","updated":"2026-07-07","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-w42r-mrx7-c633","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-3225"},{"url":"https://github.com/run-llama/llama_index/commit/4f6ee062b19212106a2632af9c9521fc7f0a3584"},{"url":"https://github.com/run-llama/llama_index"},{"url":"https://huntr.com/bounties/e33c0699-e9a2-49aa-837b-5363205637a2"}],"tags":["osv","pip"],"epss":0.00419,"epssPercentile":0.35877,"ingestedAt":"2026-07-08T18:25:53.539Z","slug":"CVE-2025-3225","body":"## Overview\n\nAn 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).\n\n## Affected packages\n\n- `llama-index-readers-papers < 0.3.2`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `llama-index-readers-papers 0.3.2`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}