Insufficient Technical Documentation in llama_index - CVE-2025-3108
Published: February 19, 2026
Vulnerability identifier: #VU123067
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2025-3108
CWE-ID: CWE-1059
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: run-llama (LlamaIndex)
Affected software:
llama_index
llama_index
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure fallback to Python's pickle module. A remote attacker can exploit this vulnerability by crafting malicious payloads to achieve full system compromise. The root cause includes an insecure fallback mechanism, lack of validation or safeguards, misleading design, and violation of Python security guidelines.
How to mitigate CVE-2025-3108
Install updates from vendor's website.