Agenta-AI agenta up to 0.86.7 special elements used in a template engine

Summaryinfo

A vulnerability classified as critical was found in Agenta-AI agenta up to 0.86.7. Affected by this issue is some unknown functionality. Such manipulation leads to improper neutralization of special elements used in a template engine. This vulnerability is uniquely identified as CVE-2026-27961. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Agenta-AI agenta up to 0.86.7. Affected by this issue is an unknown function. The manipulation with an unknown input leads to a improper neutralization of special elements used in a template engine vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Agenta is an open-source LLMOps platform. A Server-Side Template Injection (SSTI) vulnerability exists in versions prior to 0.86.8 in Agenta's API server evaluator template rendering. Although the vulnerable code lives in the SDK package, it is executed server-side within the API process when running evaluators. This does not affect standalone SDK usage — it only impacts self-hosted or managed Agenta platform deployments. Version 0.86.8 contains a fix for the issue.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-27961 since 02/25/2026. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1221 by the MITRE ATT&CK project.

Upgrading to version 0.86.8 eliminates this vulnerability.

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• Agenta-AI

Name

• agenta

Version

• 0.86.0
• 0.86.1
• 0.86.2
• 0.86.3
• 0.86.4
• 0.86.5
• 0.86.6
• 0.86.7

Website

• Product: https://github.com/Agenta-AI/agenta/

CPE 2.3info

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