Nuclio: Unauthenticated path traversal in spec.handler allows arbitrary file write in Dashboard container (CVE-2026-52832) | HOL Guard CVE

Medium · CVSS 4.9CVE-2026-52832GHSA-WPCJ-RMV4-86QG

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

Answer in brief

CVE-2026-52832 records a Medium severity (CVSS 4.9) vulnerability in Nuclio: Unauthenticated path traversal in spec.handler allows arbitrary file write in Dashboard container. The current sources do not mark it as known exploited. The current feed maps nuclio/nuclio (generic), github.com/nuclio/nuclio (go). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 2, 2026Updated Sep 9, 2026Source checked Sep 17, 2026First seen by HOL Jul 16, 2026Material review Sep 9, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 4.9
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 4.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps nuclio/nuclio (generic), github.com/nuclio/nuclio (go). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
nuclio/nucliogeneric	< 1.16.5	Not reported
github.com/nuclio/nucliogo	<1.16.5	1.16.5

Recommended response

Check inventory. Check lockfiles and deployed manifests for nuclio/nuclio, github.com/nuclio/nuclio.
Review the reported fix. Update github.com/nuclio/nuclio to 1.16.5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 2, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 9, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jul 16, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.