CVE-2026-29042 HIGH

CVE-2026-29042: Nuclio Shell Runtime Command Injection Leading to Privilege Escalation

Vendor Nuclio
Product nuclio
Weakness CWE-75
Published March 6, 2026
Last update March 9, 2026
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CVSS base score

8.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

Nuclio is a "Serverless" framework for Real-Time Events and Data Processing. Prior to version 1.15.20, the Nuclio Shell Runtime component contains a command injection vulnerability in how it processes user-supplied arguments. When a function is invoked via HTTP, the runtime reads the X-Nuclio-Arguments header and directly incorporates its value into shell commands without any validation or sanitization. This issue has been patched in version 1.15.20.

Key dates

02Disclosure timeline

March 6, 2026 CVE published
March 9, 2026 Record updated