Path Traversal in Nuclio

CVE-2026-52832

Nuclio is a "Serverless" framework for Real-Time Events and Data Processing. Prior to version 1.16.5, Nuclio Dashboard exposes POST /api/functions without authentication by default (NOP auth mode). The spec.handler field (e.g., mymodule:myfunction) is parsed by functionconfig.ParseHandler() which splits on : only — no path validation is applied to the module portion. This issue has been patched in version 1.16.5.

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-52832?
CVE-2026-52832 is a medium-severity vulnerability in Nuclio, classified under Path Traversal. CVSS score: 4.9/10. Published 2026-09-02.
How severe is CVE-2026-52832?
Medium severity. CVSS v3 base score is 4.9 out of 10.