Expected behavior violation in llama_index - CVE-2025-6211
Published: February 19, 2026
Vulnerability identifier: #VU123068
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-6211
CWE-ID: CWE-440
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the DocugamiReader class of the run-llama/llama_index repository involves the use of MD5 hashing to generate IDs for document chunks. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
Affected software
llama_index
How to mitigate CVE-2025-6211
Install updates from vendor's website.
llama_index - addressed in versions 0.3.1, 0.12.41