Vulnerability in Llamaindex
CVE-2025-6211
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (28.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000
Affected products
- Llamaindex
- Run-Llama Run-Llama/llama Index — versions unspecified
Weakness classification (CWE)
References
- huntr.com/bounties/1a48a011-a3c5-4979-9ffc-9652280bc389 (Exploit, Third Party Advisory)
- github.com/run-llama/llama_index/commit/29b2e07e64ed7d302b1cc058185560b28eaa1352 (Patch)
Frequently asked questions
- What is CVE-2025-6211?
- CVE-2025-6211 is a medium-severity vulnerability in Llamaindex, classified under Expected Behavior Violation. CVSS score: 6.5/10. Published 2025-07-10.
- How severe is CVE-2025-6211?
- Medium severity. CVSS v3 base score is 6.5 out of 10.