CVSS 3.0
7.5 highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2025-3225
High (7.5) in llamaindex llamaindex. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in llama-index-readers-papers 0.3.2.
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.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-31)
- CWE
- CWE-776
- Published
- Modified
- Record from
- the NVD, synced
Affected
- llamaindex:llamaindex
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-w42r-mrx7-c633 | PyPI | llama-index-readers-papers | <0.3.2 | 0.3.2 |
| PYSEC-2025-250 | PyPI | llama-index | >=0.12.21 <0.12.29 | 0.12.29 |
| PYSEC-2026-1570 | PyPI | llama-index-readers-papers | <0.3.2 | 0.3.2 |