CVE-2025-3108: Llama index core LlamaIndex Has Incomplete Documentation Of Vulnerability

MODERATE
Advisory Identifier: GHSA-m84c-4c34-28gf
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CVSS 5.0
CWE-1112
Published
Advisory Summary

CVE-2025-3108 is a MODERATE (CVSS 5.0) llamaindex has incomplete documentation of vulnerability (CWE-1112: Incomplete Documentation of Program Execution) affecting Llama index core libraries in the PyPI ecosystem. The issue involves llamaindex has incomplete documentation of program execution related to jsonpickleserializer component. Remediation is available by upgrading affected packages to version 0.12.41.

CVE-2025-3108 at a Glance

CVE Identifier CVE-2025-3108
GHSA Identifier GHSA-m84c-4c34-28gf
Severity MODERATE
CVSS v3.1 Base Score 5.0
CWE Classification CWE-1112: Incomplete Documentation of Program Execution
Affected Product Llama index core
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 5.0

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2025-3108

To remediate this vulnerability, upgrade all affected Llama index core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

llama-index-core fixed: 0.12.41 
pip install llama-index-core>=0.12.41
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show llama-index-core

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-3108, inspect your installed packages using pip:

pip show llama-index-core

Analyze the terminal output to locate any version of Llama index core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.12.41), your application is affected.

Note: The pip show llama-index-core command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-1112: Incomplete Documentation of Program Execution, where the document does not fully define all mechanisms that are used to control or influence how product-specific programs are executed. In Llama index core, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Incomplete Documentation of Program Execution 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 involves the use of an insecure fallback strategy without sufficient input validation or protective safeguards. Version 0.12.41 renames JsonPickleSerializer to PickleSerializer and adds a warning to the docs to only use PickleSerializer to deserialize safe things.

CVE-2025-3108 Affected Llama index core Versions

1 component(s)
Fixed Versions:
0.12.41
Product / Package Ecosystem Affected Versions Fixed Version
llama-index-core
pypi/llama-index-core
PyPI
≥ 0.11.15
< 0.12.41
0.12.41

References

NVD — CVE-2025-3108 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-3108
Security Fix Commit FIX COMMIT
https://github.com/run-llama/llama_index/commit/702e4340623092fac4cf2fe95eb9465034856da3
Llama index core Source Repository REPOSITORY
https://github.com/run-llama/llama_index
Llama index core Source Repository REPOSITORY
https://github.com/run-llama/llama_index/blob/v0.12.41/CHANGELOG.md#llama-index-core-01241
huntr.com/bounties/9b55a5e8-7... WEB
https://huntr.com/bounties/9b55a5e8-74e6-4241-b323-e360dc8b110a

Frequently Asked Questions

What is CVE-2025-3108?
CVE-2025-3108 is a security vulnerability in Llama index core involving LlamaIndex has Incomplete Documentation of Program Execution related to JsonPickleSerializer component under CWE-1112: Incomplete Documentation of Program Execution.
Which Llama index core versions are affected?
Affected versions include releases prior to 0.12.41 across affected packages: llama-index-core.
What version fixes CVE-2025-3108?
Upgrading to 0.12.41 (or the latest patched release for your respective branch) resolves the vulnerability.
Is llama-index-core affected?
Yes, llama-index-core is affected in releases prior to 0.12.41. Upgrade your dependency to 0.12.41 or later.
What is the CVSS score of CVE-2025-3108?
CVE-2025-3108 has a CVSS v3.1 base score of 5.0 (MODERATE) with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2025-3108?
CVE-2025-3108 is classified under CWE-1112: Incomplete Documentation of Program Execution (The document does not fully define all mechanisms that are used to control or influence how product-specific programs are executed.).
How can I check PyPI dependencies for CVE-2025-3108?
Run the dependency tree command: 'pip show llama-index-core'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-m84c-4c34-28gf",
  "modified" : "2025-07-07T23:11:36Z",
  "published" : "2025-07-07T00:30:18Z",
  "aliases" : [ "CVE-2025-3108" ],
  "summary" : "LlamaIndex has Incomplete Documentation of Program Execution related to JsonPickleSerializer component",
  "details" : "Incomplete Documentation of Program Execution 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 involves the use of an insecure fallback strategy without sufficient input validation or protective safeguards. Version 0.12.41 renames JsonPickleSerializer to PickleSerializer and adds a warning to the docs to only use PickleSerializer to deserialize safe things.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "llama-index-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.11.15"
      }, {
        "fixed" : "0.12.41"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.12.40"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-3108"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/run-llama/llama_index/commit/702e4340623092fac4cf2fe95eb9465034856da3"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/run-llama/llama_index"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/run-llama/llama_index/blob/v0.12.41/CHANGELOG.md#llama-index-core-01241"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/9b55a5e8-74e6-4241-b323-e360dc8b110a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1112" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-07-07T23:11:36Z",
    "nvd_published_at" : "2025-07-06T23:15:21Z"
  }
}