CVE-2024-2952: Litellm LiteLLM Has Server-Side Template Injection Vulnerability

CRITICAL
Advisory Identifier: GHSA-46cm-pfwv-cgf8
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CVSS 9.8
CWE-76
Published
Advisory Summary

CVE-2024-2952 is a CRITICAL (CVSS 9.8) litellm has server-side template injection vulnerability (CWE-76: Improper Neutralization of Equivalent Special Elements) affecting Litellm libraries in the PyPI ecosystem. The issue involves litellm has server-side template injection vulnerability in /completions endpoint. Remediation is available by upgrading affected packages to version 1.34.42.

CVE-2024-2952 at a Glance

CVE Identifier CVE-2024-2952
GHSA Identifier GHSA-46cm-pfwv-cgf8
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-76: Improper Neutralization of Equivalent Special Elements
Affected Product Litellm
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 9.8

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

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

How to Fix CVE-2024-2952

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

litellm fixed: 1.34.42 
pip install litellm>=1.34.42
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 litellm

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-2952, inspect your installed packages using pip:

pip show litellm

Analyze the terminal output to locate any version of Litellm in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.34.42), your application is affected.

Note: The pip show litellm command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-76: Improper Neutralization of Equivalent Special Elements, where the product correctly neutralizes certain special elements, but it improperly neutralizes equivalent special elements. In Litellm, 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

BerriAI/litellm is vulnerable to Server-Side Template Injection (SSTI) via the `/completions` endpoint. The vulnerability arises from the `hf_chat_template` method processing the `chat_template` parameter from the `tokenizer_config.json` file through the Jinja template engine without proper sanitization. Attackers can exploit this by crafting malicious `tokenizer_config.json` files that execute arbitrary code on the server.

CVE-2024-2952 Affected Litellm Versions

1 component(s)
Fixed Versions:
1.34.42
Product / Package Ecosystem Affected Versions Fixed Version
litellm
pypi/litellm
PyPI
< 1.34.42
1.34.42

References

NVD — CVE-2024-2952 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-2952
Litellm Source Repository REPOSITORY
https://github.com/BerriAI/litellm/issues/2949
Litellm Source Repository REPOSITORY
https://github.com/BerriAI/litellm/pull/2941
Security Fix Commit FIX COMMIT
https://github.com/BerriAI/litellm/commit/8a1cdc901708b07b7ff4eca20f9cb0f1f0e8d0b3
Litellm Source Repository REPOSITORY
https://github.com/BerriAI/litellm
Litellm Source Repository REPOSITORY
https://github.com/BerriAI/litellm/blob/0d803e13798db40aa7463e64a6bafaee386424f5/litellm/proxy/proxy_server.py#L2087
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-46cm-pfwv-cgf8
Litellm Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/litellm/PYSEC-2026-387.yaml
huntr.com/bounties/a9e0a164-6... WEB
https://huntr.com/bounties/a9e0a164-6de0-43a4-a640-0cbfb54220a4
pypi.org/project/litellm WEB
https://pypi.org/project/litellm

Frequently Asked Questions

What is CVE-2024-2952?
CVE-2024-2952 is a security vulnerability in Litellm involving LiteLLM has Server-Side Template Injection vulnerability in /completions endpoint under CWE-76: Improper Neutralization of Equivalent Special Elements.
Which Litellm versions are affected?
Affected versions include releases prior to 1.34.42 across affected packages: litellm.
What version fixes CVE-2024-2952?
Upgrading to 1.34.42 (or the latest patched release for your respective branch) resolves the vulnerability.
Is litellm affected?
Yes, litellm is affected in releases prior to 1.34.42. Upgrade your dependency to 1.34.42 or later.
What is the CVSS score of CVE-2024-2952?
CVE-2024-2952 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2024-2952?
CVE-2024-2952 is classified under CWE-76: Improper Neutralization of Equivalent Special Elements (The product correctly neutralizes certain special elements, but it improperly neutralizes equivalent special elements.).
How can I check PyPI dependencies for CVE-2024-2952?
Run the dependency tree command: 'pip show litellm'. 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-46cm-pfwv-cgf8",
  "modified" : "2026-07-06T14:50:04Z",
  "published" : "2024-04-10T18:30:48Z",
  "aliases" : [ "CVE-2024-2952" ],
  "summary" : "LiteLLM has Server-Side Template Injection vulnerability in /completions endpoint",
  "details" : "BerriAI/litellm is vulnerable to Server-Side Template Injection (SSTI) via the `/completions` endpoint. The vulnerability arises from the `hf_chat_template` method processing the `chat_template` parameter from the `tokenizer_config.json` file through the Jinja template engine without proper sanitization. Attackers can exploit this by crafting malicious `tokenizer_config.json` files that execute arbitrary code on the server.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "litellm"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.34.42"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-2952"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/BerriAI/litellm/issues/2949"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/BerriAI/litellm/pull/2941"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/BerriAI/litellm/commit/8a1cdc901708b07b7ff4eca20f9cb0f1f0e8d0b3"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/BerriAI/litellm"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/BerriAI/litellm/blob/0d803e13798db40aa7463e64a6bafaee386424f5/litellm/proxy/proxy_server.py#L2087"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-46cm-pfwv-cgf8"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/litellm/PYSEC-2026-387.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/a9e0a164-6de0-43a4-a640-0cbfb54220a4"
  }, {
    "type" : "WEB",
    "url" : "https://pypi.org/project/litellm"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-76" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-10T22:18:53Z",
    "nvd_published_at" : "2024-04-10T17:15:54Z"
  }
}