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CVE-2026-52833— Nuclio: Unsanitized runtimeAttributes.repositories injected into Groovy build.gradle leads to build-time RCE

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（Real-Time Events and Data Processing）的“无服务器”（Serverless）框架。在 1.16.5 版本之前，Nuclio 的 Java 运行时在构建函数时会生成 文件，其中使用了 Go 语言中的 包。该模板使用 动作来渲染 的值，但并未进行任何转义处理。攻击者可以通过嵌入一个闭合花括号（ ）来跳出 块，从而添加在 Gradle 配置阶段无条件执行的任意 Groovy 语句。此问题已在 1.16.5 版本中修复。

CVSS 8.0 · High
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I. Basic Information for CVE-2026-52833

Vulnerability Information
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Vulnerability Title
Nuclio: Unsanitized runtimeAttributes.repositories injected into Groovy build.gradle leads to build-time RCE
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's Java runtime generates a build.gradle file during function builds using Go's text/template package. The template renders runtimeAttributes.repositories[] values with the {{ . }} action, which performs no escaping. An attacker can embed a closing brace (}) to break out of the repositories {} block and append arbitrary Groovy statements that execute unconditionally during the Gradle configuration phase. This issue has been patched in version 1.16.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
nuclio nuclio < 1.16.5 -

II. Public POCs for CVE-2026-52833

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III. Intelligence Information for CVE-2026-52833

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Other References for CVE-2026-52833 (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-2026-52831 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
CVE-2026-52832 4.9 MEDIUM Nuclio: Unauthenticated path traversal in spec.handler allows arbitrary file write in Dash

IV. Related Vulnerabilities

Same product: nuclio
Same vendor: nuclio
Same weakness: CWE-94

V. Comments for CVE-2026-52833

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