CVSS 3.0
6.5 mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:LCVE-2025-6211
Medium (6.5) in llamaindex llamaindex. EPSS 0.4% chance of exploitation in the next 30 days. Fixed in llama-index 0.12.41.
A vulnerability in the DocugamiReader class of the run-llama/llama_index repository, up to version 0.12.28, involves the use of MD5 hashing to generate IDs for document chunks. This approach leads to hash collisions when structurally distinct chunks contain identical text, resulting in one chunk overwriting another. This can cause loss of semantically or legally important document content, breakage of parent-child chunk hierarchies, and inaccurate or hallucinated responses in AI outputs. The issue is resolved in version 0.3.1.
Severity
- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 29% of CVEs (scores of 2026-10-31)
- CWE
- CWE-440
- Published
- Modified
- Record from
- the NVD, synced
Affected
- llamaindex:llamaindex
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-5hq9-5r78-2gjh | PyPI | llama-index | <0.12.41 | 0.12.41 |
| GHSA-5hq9-5r78-2gjh | PyPI | llama-index-readers-docugami | <0.3.1 | 0.3.1 |
| PYSEC-2026-1566 | PyPI | llama-index-readers-docugami | <0.3.1 | 0.3.1 |
| PYSEC-2026-2606 | PyPI | llama-index | <0.12.41 | 0.12.41 |