What’s Vulnerable › Vulnerabilities

CVE-2024-2952: Server-Side Template Injection in BerriAI/litellm

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-04-10 · updated 2026-06-17
• Weakness: CWE-76

Description

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 products

• BerriAI litellm: before 1.34.42 — fixed in 1.34.42

How to fix

Upgrade to a fixed version: BerriAI litellm 1.34.42. Check the vendor advisory for mitigations.

References

• https://github.com/berriai/litellm/commit/8a1cdc901708b07b7ff4eca20f9cb0f1f0e8d0b3
• https://huntr.com/bounties/a9e0a164-6de0-43a4-a640-0cbfb54220a4
• https://github.com/berriai/litellm/commit/8a1cdc901708b07b7ff4eca20f9cb0f1f0e8d0b3
• https://huntr.com/bounties/a9e0a164-6de0-43a4-a640-0cbfb54220a4

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