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Vulnerability record · CVE-2026-52831 · published 2 September 2026

CVE-2026-52831: OS command injection vulnerability

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.

8.0 CVSS 3.1 High EPSS 0.53% · top 57.2% CWE-78 · OS command injection Deferred
8.0CVSS 3.1 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
9 Sep 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

References

LinkTags
https://github.com/nuclio/nuclio/commit/3356b86a8bfab3f960aa420310ebff765df9dede
https://github.com/nuclio/nuclio/releases/tag/1.16.4
https://github.com/nuclio/nuclio/security/advisories/GHSA-v5px-423j-pf7p

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Source: NIST National Vulnerability Database (record CVE-2026-52831), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.