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TI-2026-23187 Aliases CVE-2026-29042GHSA-95fj-3w7g-4r27

Nuclio Shell Runtime Command Injection Leading to Privilege Escalation

Priority HIGH 80CWE-75Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.02589 85th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed nuclio (nuclio): 1.15.20github.com/nuclio/nuclio (Go): 1.15.20

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
nuclionucliobefore 1.15.201.15.20Patch availableCNA
—github.com/nuclio/nuclio (Go)before 1.15.201.15.20Patch availableGHSA-95fj-3w7g-4r27
  • nuclio Vendornuclio Affected before 1.15.20 Fixed in 1.15.20 Patch available CNA
  • github.com/nuclio/nuclio (Go) Vendor— Affected before 1.15.20 Fixed in 1.15.20 Patch available GHSA-95fj-3w7g-4r27

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:iguazio:nuclio:*:*:*:*:*:*:*:*before 1.15.20VulnerableIguazio
  • cpe:2.3:a:iguazio:nuclio:*:*:*:*:*:*:*:* Versions before 1.15.20 Vulnerable ·Iguazio

Remediation

  • Fix · CNA nuclio (nuclio) Fixed in 1.15.20
  • Fix · GHSA-95fj-3w7g-4r27 github.com/nuclio/nuclio (Go) Fixed in 1.15.20 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-29042
  2. 2026-10-03 Alias added: GHSA-95fj-3w7g-4r27

References

Exploit 1

Patch 2

Advisory 1

Other 2

  • TI-2026-55234 Nuclio: Unauthenticated OS command injection via function namespace in docker ps --filter label (local Docker platform) CVSS 3.1HIGH 8.0
  • TI-2026-37941 Nuclio: Unsanitized runtimeAttributes.repositories injected into Groovy build.gradle leads to build-time RCE CVSS 3.1HIGH 8.0
  • TI-2026-33468 Nuclio: Missing authorization on project write paths allows any authenticated user to modify or delete any project CVSS 3.1HIGH 8.3
  • TI-2026-55233 Nuclio: Kaniko build tempDir command injection CVSS 4.0HIGH 7.1
  • TI-2026-37940 Nuclio: Unauthenticated path traversal in spec.handler allows arbitrary file write in Dashboard container CVSS 3.1MEDIUM 4.9
  • TI-2026-55235 Nuclio: Unauthenticated OS command injection via namespace header in list-all resource path on local platform CVSS 4.0HIGH 8.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences