CVE-2026-52831

Nuclio: Unsanitized cron trigger event headers/body injected into CronJob shell command leads to persistent RCE

Published Sep 2, 2026 CVSS 3.1 · 8 High EPSS < 1% KEV · Not listed
Description
Nuclio is a "Serverless" framework for Real-Time Events and Data Processing. Prior to version 1.16.4, the Nuclio controller builds a curl invocation string for each cron trigger and stores it as the args of a Kubernetes CronJob container (/bin/sh, -c, <command>). Two fields in the trigger specification flow into this string without adequate sanitization: event.headers keys and event.body. This issue has been patched in version 1.16.4.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-v5px-423j-pf7p Nuclio: Unsanitized cron trigger event headers/body injected into CronJob shell command leads to persistent RCE
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Nuclio
Nuclio nuclio
Vendors & Products Nuclio
Nuclio nuclio
Type Values Removed Values Added
Description Nuclio is a "Serverless" framework for Real-Time Events and Data Processing. Prior to version 1.16.4, the Nuclio controller builds a curl invocation string for each cron trigger and stores it as the args of a Kubernetes CronJob container (/bin/sh, -c, <command>). Two fields in the trigger specification flow into this string without adequate sanitization: event.headers keys and event.body. This issue has been patched in version 1.16.4.
Title Nuclio: Unsanitized cron trigger event headers/body injected into CronJob shell command leads to persistent RCE
Weaknesses CWE-78
References
Metrics cvssV3_1

{'score': 8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Sep 3, 2026, 2:31 PM
Reserved
Jun 8, 2026, 6:11 PM
Status
Deferred
Published
Sep 2, 2026, 5:17 PM
Modified
Sep 9, 2026, 9:04 PM