Nuclio up to 1.17.1 Dashboard Build Pipeline spec.build.tempDir privileges management

Summaryinfo

A vulnerability was found in Nuclio up to 1.17.1 and classified as very critical. This issue affects some unknown processing of the component Dashboard Build Pipeline. Executing a manipulation of the argument spec.build.tempDir can lead to privileges management. This vulnerability appears as CVE-2026-79754. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Nuclio up to 1.17.1. It has been declared as very critical. This vulnerability affects an unknown code of the component Dashboard Build Pipeline. The manipulation of the argument spec.build.tempDir with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Nuclio is a "Serverless" framework for Real-Time Events and Data Processing. From version 1.6.19 to before version 1.17.2, Nuclio's Dashboard build pipeline does not sanitize the spec.build.tempDir field before using it to construct a shell command. When the Kaniko container builder is enabled, a user with function-create permission can inject shell metacharacters into this field and achieve arbitrary command execution inside the Dashboard container, which runs with a Kubernetes service account holding wildcard access to Secrets, Pods, Jobs, and Deployments in its namespace. This issue has been patched in version 1.17.2.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-79754 since 08/25/2026. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are necessary for 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 09/02/2026). The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 1.17.2 eliminates this vulnerability.

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Productinfo

Name

• Nuclio

Version

• 1.17.0
• 1.17.1

Website

• Product: https://github.com/nuclio/nuclio/

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