MD5 Hash Collision in run-llama/llama_index
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.0 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| run-llama | run-llama/llama_index | before 0.3.1 | 0.3.1 | Patch available | CNA |
| — | llama-index (PyPI) | before 0.12.41 | 0.12.41 | Patch available | GHSA-5hq9-5r78-2gjh |
| — | llama-index-readers-docugami (PyPI) | before 0.3.1 | 0.3.1 | Patch available | GHSA-5hq9-5r78-2gjh |
- run-llama/llama_index Vendorrun-llama Affected before 0.3.1 Fixed in 0.3.1 Patch available CNA
- llama-index (PyPI) Vendor— Affected before 0.12.41 Fixed in 0.12.41 Patch available GHSA-5hq9-5r78-2gjh
- llama-index-readers-docugami (PyPI) Vendor— Affected before 0.3.1 Fixed in 0.3.1 Patch available GHSA-5hq9-5r78-2gjh
Remediation
- Fix · CNA run-llama/llama_index (run-llama) Fixed in 0.3.1
- Fix · GHSA-5hq9-5r78-2gjh llama-index (PyPI) Fixed in 0.12.41 Advisory →
- Fix · GHSA-5hq9-5r78-2gjh llama-index-readers-docugami (PyPI) Fixed in 0.3.1 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-6211
- 2026-10-03 Alias added: GHSA-5hq9-5r78-2gjh
References
More run-llama Llamaindex vulnerabilities
- TI-2025-01545 SQL Injection in run-llama/llama_index CVSS 3.0CRITICAL 9.8
- TI-2025-01507 SQL Injection in run-llama/llama_index CVSS 3.0CRITICAL 9.8
- TI-2024-11960 SQL Injection to RCE in run-llama/llama_index CVSS 3.1CRITICAL 9.8
- TI-2024-11094 SQL Injection in run-llama/llama_index CVSS 3.0CRITICAL 9.8
- TI-2024-03068 Command Injection in run-llama/llama_index CVSS 3.0CRITICAL 9.8
- TI-2024-15754 LlamaIndex (aka llama_index) through 0.9.34 allows SQL injection via the Text-to-SQL… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-6211 · CVE Program
- CVE-2025-6211 · NVD
- FIRST EPSS
- GHSA-5hq9-5r78-2gjh · GitHub Advisory Database · CC BY 4.0
- CVE-2025-6211 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences