Advisoriesby IbisLiteLLMGHSA-46cm-pfwv-cgf8
LiteLLM has Server-Side Template Injection vulnerability in /completions endpoint
Fix: upgrade to 1.34.42 or later
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| litellm PyPI | < 1.34.42 | 1.34.42 |
Details and references
- CVSS 3.0
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-76
- Also known as
- CVE-2024-2952, PYSEC-2026-387
- nvd.nist.gov/vuln/detail/CVE-2024-2952
- github.com/BerriAI/litellm/issues/2949
- github.com/BerriAI/litellm/pull/2941
- github.com/BerriAI/litellm/commit/8a1cdc901708b07b7ff4eca20f9cb0f1f0e8d0b3
- github.com/BerriAI/litellm
- github.com/BerriAI/litellm/blob/0d803e13798db40aa7463e64a6bafaee386424f5/litellm/proxy/proxy_server.py#L2087
- github.com/advisories/GHSA-46cm-pfwv-cgf8
- github.com/pypa/advisory-database/tree/main/vulns/litellm/PYSEC-2026-387.yaml
- huntr.com/bounties/a9e0a164-6de0-43a4-a640-0cbfb54220a4
- pypi.org/project/litellm
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