by Kastro
Paper/Archive/CVE-2026-29042

CVE-2026-29042

nuclio nuclio — Nuclio Shell Runtime Command Injection Leading to Privilege Escalation

EPSS 2%public exploitCVSS 9.8
critical.is priorityof 100
56
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 84.2.842 × 2016.8Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
nuclio< 1.15.20–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)8.9CVSS: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
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

refgithub.com/nuclio/nuclio/security/advisories/GHSA-95fj-3w7g-4r27refgithub.com/nuclio/nuclio/pull/4030refgithub.com/nuclio/nuclio/commit/5352d7e16cf92f4350a2f8d806c4b80b626b5c5arefgithub.com/nuclio/nuclio/releases/tag/1.15.20