Cyber Resilience

CVE-2026-29042

Iguazio Nuclio ≤ 1.15.20

Public PoC
Published
06 March 2026
Modified
10 March 2026
Patch / advisory
View advisory
CVSS Score v4 8.9
Click a component to see what it means
Raw vectorCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.023 82th percentile
Risk Priority 49 floored blend · peak EPSS

Summary

CVE-2026-29042 is a high-severity Special Element Injection (CWE-75) vulnerability in Iguazio Nuclio. Its CVSS base score is 8.9 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Content Injection (T1659); ranked in the top 18% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2026-29042 is a command injection vulnerability (CWE-75) in the Nuclio Shell Runtime component of Nuclio, an open-source serverless framework for real-time events and data processing. Affecting versions prior to 1.15.20, the flaw arises when a function is invoked via HTTP, as the runtime reads the user-supplied value from the X-Nuclio-Arguments header and incorporates it directly into shell commands without validation or sanitization. The vulnerability carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating critical severity.

The vulnerability can be exploited remotely by unauthenticated attackers with network access, requiring low complexity and no privileges or user interaction. By crafting a malicious X-Nuclio-Arguments header in an HTTP request to invoke a Nuclio function, an attacker can inject arbitrary shell commands, potentially achieving remote code execution. This grants high-impact access to confidentiality, integrity, and availability, allowing full system compromise on the hosting environment.

Mitigation is available via upgrading to Nuclio version 1.15.20, where the issue was patched. Relevant advisories and resources include the GitHub security advisory (GHSA-95fj-3w7g-4r27), the patching commit (5352d7e16cf92f4350a2f8d806c4b80b626b5c5a), pull request 4030, and the release notes for version 1.15.20.

EU & UK References

Vulnerability Data

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…

more

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.

CWE(s)
CWE-75

Related Threats

MITRE ATT&CK Enterprise Techniques

T1659 Content Injection Initial Access
Adversaries may gain access and continuously communicate with victims by injecting malicious content into systems through online network traffic.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2021-22911Shared CWE-75
CVE-2024-31809Shared CWE-75
CVE-2024-31812Shared CWE-75
CVE-2026-54771Shared CWE-75
CVE-2025-50213Shared CWE-75
CVE-2024-35373Shared CWE-75
CVE-2024-58362Shared CWE-75
CVE-2026-31908Shared CWE-75
CVE-2024-31806Shared CWE-75
CVE-2024-24257Shared CWE-75

Affected Assets

iguazio
nuclio
≤ 1.15.20

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match

Input validation directly stops special-element injection by rejecting or sanitizing untrusted data before it reaches a different control plane.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input sanitization to block special-element injection.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing catches injection vulnerabilities but does not itself implement the sanitization fix.

A.8.15 Logging partial match
finds

Logging can record injection attempts for detection but does not prevent the weakness.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates input validation and sanitization practices that directly prevent special-element injection.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly call for controls against injection flaws including special-element handling.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles reduce injection surfaces but do not prescribe the actual sanitization logic.

A.8.28 Secure coding partial match
prevents

Secure coding standards require rigorous input sanitization, directly eliminating CWE-75.

References