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OpenAdvisories
High · 8.0 CVE-2026-52831 EUVD-2026-70220GHSA-v5px-423j-pf7pGO-2026-5946

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

Published Sep 2, 2026 · Updated Sep 3, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
nuclio nuclio < 1.16.4 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/nuclio/nuclio < 0.0.0-20260601075854-3356b86a8bfa 0.0.0-20260601075854-3356b86a8bfa GHSA-v5px-423j-pf7p

Advisories 1

References