BerriAI Litellm up to 1.82.4 Prompts prompt_endpoints.py dotprompt_content special elements in template engine

Summaryinfo

A vulnerability was found in BerriAI Litellm up to 1.82.4 and classified as critical. This affects an unknown function of the file prompt_endpoints.py of the component Prompts. Executing a manipulation of the argument dotprompt_content can lead to special elements in template engine. This vulnerability is handled as CVE-2026-37004. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical was found in BerriAI Litellm up to 1.82.4. This vulnerability affects an unknown code of the file prompt_endpoints.py of the component Prompts. The manipulation of the argument dotprompt_content with an unknown input leads to a special elements in template engine vulnerability. The CWE definition for the vulnerability is CWE-1336. The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

BerriAI litellm <=1.82.4 is vulnerable to Server-Side Template Injection (SSTI), which allows unauthenticated remote attackers to execute arbitrary OS commands via a crafted dotprompt_content parameter in the /prompts/test endpoint due to use of an unsandboxed jinja2.Environment.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-37004 since 04/06/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/27/2026). The MITRE ATT&CK project declares the attack technique as T1221.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• BerriAI

Name

• Litellm

Version

• 1.82.0
• 1.82.1
• 1.82.2
• 1.82.3
• 1.82.4

Website

• Product: https://github.com/BerriAI/litellm/

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