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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-52832
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-02 17:17:45 UTC
Updated2026-09-02 19:17:20 UTC
DescriptionNuclio 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.

Risk And Classification

Primary CVSS: v3.1 4.9 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.004940000 probability, percentile 0.405360000 (date 2026-09-03)

Problem Types: CWE-22 | CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.9MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
3.1CNADECLARED4.9MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Nuclio Nuclio affected < 1.16.5 Not specified

References

ReferenceSourceLinkTags
github.com/nuclio/nuclio/releases/tag/1.16.5 [email protected] github.com
github.com/nuclio/nuclio/commit/2a55d3a8bd4d49226cb4742020303f5bf2a0931d [email protected] github.com
github.com/nuclio/nuclio/security/advisories/GHSA-wpcj-rmv4-86qg 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/nuclio/nuclio/pull/4143 [email protected] github.com
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