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CVE-2026-52832— Nuclio: Unauthenticated path traversal in spec.handler allows arbitrary file write in Dashboard container

Quick assessment

Affected
nuclio nuclio
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nuclio 是一个用于实时事件和数据处理的“无服务器”（Serverless）框架。在 1.16.5 版本之前，Nuclio 的仪表板（Dashboard）默认情况下（在 NOP 认证模式下）无需身份验证即可访问 POST /api/functions 端点。spec.handler 字段（例如 mymodule:myfunction）由 functionconfig.ParseHandler() 解析，该函数仅以冒号“:”进行分割，且未对模块部分进行路径验证。此问题已在 1.16.5 版本中修复。

CVSS 4.9 · Medium
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I. Basic Information for CVE-2026-52832

Vulnerability Information
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Vulnerability Title
Nuclio: Unauthenticated path traversal in spec.handler allows arbitrary file write in Dashboard container
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
nuclio nuclio < 1.16.5 -

II. Public POCs for CVE-2026-52832

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III. Intelligence Information for CVE-2026-52832

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Other References for CVE-2026-52832 (4)

Same Patch Batch · nuclio · 2026-09-02 · 7 CVEs total

CVE-2026-79756 8.7 HIGH Nuclio: Unauthenticated OS command injection via namespace header in list-all resource pat
CVE-2026-45730 8.3 HIGH Nuclio: Missing authorization on project write paths allows any authenticated user to modi
CVE-2026-52833 8.0 HIGH Nuclio: Unsanitized runtimeAttributes.repositories injected into Groovy build.gradle leads
CVE-2026-52831 8.0 HIGH Nuclio: Unsanitized cron trigger event headers/body injected into CronJob shell command le
CVE-2026-79755 8.0 HIGH Nuclio: Unauthenticated OS command injection via function namespace in docker ps --filter
CVE-2026-79754 7.1 HIGH Nuclio: Kaniko build tempDir command injection

IV. Related Vulnerabilities

Same product: nuclio
Same vendor: nuclio
Same weakness: CWE-22

V. Comments for CVE-2026-52832

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