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OpenAdvisories
Medium · 4.9 Public exploit CVE-2026-52832 EUVD-2026-70215GHSA-wpcj-rmv4-86qgGO-2026-6012

Nuclio: Unauthenticated path traversal in spec.handler allows arbitrary file write in Dashboard container

Published Sep 2, 2026 · Updated Sep 2, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
nuclio nuclio < 1.16.5 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • Nuclio Dashboard (NOP mode) accepts unauthenticated POST /api/functions. The spec.handler field isn't path-validated, so ../../../../tmp/x.txt:handler escapes the build tempdir via path.Join, letting…

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/nuclio/nuclio < 1.16.5 1.16.5 GHSA-wpcj-rmv4-86qg
Go github.com/nuclio/nuclio all versions — GO-2026-6012

Advisories 1

References