CVE-2025-3108

HIGH EPSS 33.4%
Published Jul 6, 202512mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Jul 6, 2025 12mo ago
Last Modified Jun 17, 2026 2w ago

Description

A critical deserialization vulnerability exists in the run-llama/llama_index library's JsonPickleSerializer component, affecting versions v0.12.27 through v0.12.40. This vulnerability allows remote code execution due to an insecure fallback to Python's pickle module. JsonPickleSerializer prioritizes deserialization using pickle.loads(), which can execute arbitrary code when processing untrusted data. Attackers can exploit this 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.

CVSS Details

Base Score
7.5
Exploitability
1.6
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
33.4% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-1112

Affected Products 1

VendorProductVersionRange
llamaindexllamaindex*≥0.12.27  –  <0.12.41

References 2

  • github.com https://github.com/run-llama/llama_index/commit/702e4340623092fac4cf2fe95eb9465034856da3
    Patch
  • huntr.com https://huntr.com/bounties/9b55a5e8-74e6-4241-b323-e360dc8b110a
    ExploitThird Party Advisory

Remediation

  • github.com https://github.com/run-llama/llama_index/commit/702e4340623092fac4cf2fe95eb9465034856da3
    Patch