{"id":"CVE-2025-3225","aliases":["GHSA-w42r-mrx7-c633","PYSEC-2025-250","PYSEC-2026-1570"],"url":"https://o3.security/vulnerability/CVE-2025-3225","summary":"XML Entity Expansion vulnerability in run-llama/llama_index","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 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":"2025-07-07T09:54:06.033Z","modified":"2026-07-15T01:49:16.631180917Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"llama-index-readers-papers","fixedVersion":"0.3.2"}],"fix":{"url":"https://github.com/run-llama/llama_index/commit/4f6ee062b19212106a2632af9c9521fc7f0a3584","label":"run-llama/llama_index@4f6ee06"},"references":[{"type":"WEB","url":"https://huntr.com/bounties/e33c0699-e9a2-49aa-837b-5363205637a2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/3xxx/CVE-2025-3225.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-3225"},{"type":"FIX","url":"https://github.com/run-llama/llama_index/commit/4f6ee062b19212106a2632af9c9521fc7f0a3584"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:16.631180917Z"}}