Hash Collision Vulnerability in Run-Llama's Document Reader
CVE-2025-6211

6.5MEDIUM

Key Information:

Vendor

Run-llama

Status
Run-llama/llama Index
Vendor
CVE Published:
10 July 2025

What is CVE-2025-6211?

A vulnerability exists in the DocugamiReader class of the run-llama/llama_index repository prior to version 0.12.28, where the use of MD5 hashing for generating document chunk IDs can lead to hash collisions. This can result in structurally distinct document chunks that share identical text overwriting each other. Consequently, critical and legally significant content may be lost, parent-child chunk hierarchies could be disrupted, and AI-generated outputs might become inaccurate or fabricative. The issue has been addressed in version 0.3.1.

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Affected Version(s)

run-llama/llama_index < 0.3.1

References

https://huntr.com/bounties/1a48a011-a3c5-4979-9ffc-965228...
https://github.com/run-llama/llama_index/commit/29b2e07e6...

CVSS V3.0

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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