Quick answers
- Is CVE-2026-79756 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-79756 being exploited in the wild.
- How severe is CVE-2026-79756?
- Informational severity, with a CVSS score of 9.8, published 2 September 2026.
- Which products and versions are affected?
- Nuclio prior to 1.17.4.
- Is there a fix for CVE-2026-79756?
- A patch was published on 2026-07-27: patch merged in development branch on July 27, 2026 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-79756 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-79756?
- Check whether you run Nuclio at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
This is an OS command injection vulnerability in the Nuclio dashboard's list-all resource endpoint. The vulnerability exists in the local/Docker platform implementation where the resourceNamespace parameter is interpolated unquoted into a /bin/sh -c command string. Although a prior fix added input validation for function names and quoted certain command paths, the list-all code path (triggered when no specific resource name is provided) was missed. An unauthenticated attacker can inject shell metacharacters via HTTP headers (X-Nuclio-Function-Namespace, X-Nuclio-Project-Namespace, or X-Nuclio-Function-Event-Namespace) to execute arbitrary commands. The vulnerability requires only network access to the dashboard and no authentication. A patch was released in version 1.17.4.
Affected products
- Nuclio Nuclio prior to 1.17.4
Timeline
- 2026-09-02: disclosed
- 2026-07-27: patched: patch merged in development branch on July 27, 2026