CVE-2026-52831
Nuclio: Unsanitized cron trigger event headers/body injected into CronJob shell command leads to persistent RCE
HIGH 8.0EPSS 0.3%
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
- nuclio
- CVSS v3.1 GITHUB
- 8.0 HIGH
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H - CVSS v3.1 GitHub
- 10.0 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - EPSS
- 0.32% chance of exploitation in the next 30 days, 24th percentile
- Published
- 2026-09-02