CVE-2026-29042

Q: How do I fix CVE-2026-29042?

Upgrade nuclio to 1.15.20 or later.

Q: Is CVE-2026-29042 being actively exploited?

Not that we know of. CVE-2026-29042 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.3% is the estimated probability that it will be exploited in the next 30 days. That is higher than 82% of all scored CVEs.

Q: How severe is CVE-2026-29042?

CVE-2026-29042 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-29042 affect?

Published advisories record a fix for nuclio (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

CRITICALEPSS 82th pctl

9.8

CVSS v3

NVD

Description

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.

CWE-75

How to fix

Remediation Available

nuclioNVD

Affected:< 1.15.20Fixed in:1.15.20CVE-2026-29042derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.33%probability of exploitation in 30 days

82ndpercentile

Elevated risk: more likely to be exploited than 82% of all known CVEs.

References

Patch2

Exploit1

github.com

Release Notes1

github.com

Related Vulnerabilities

Other CWE-75 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-22911	Critical	9.8	95%	-	-
CVE-2024-0801	High	7.5	42%	-	-
CVE-2021-39174	High	8.8	3.9%	-	Fix
CVE-2023-40743	Critical	9.8	2.6%	-	Fix
CVE-2021-22910	Critical	9.8	2.3%	-	Fix
CVE-2024-27622	High	7.2	2.0%	-	-

Common questions

How do I fix CVE-2026-29042?

Upgrade nuclio to 1.15.20 or later.

Is CVE-2026-29042 being actively exploited?

Not that we know of. CVE-2026-29042 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.3% is the estimated probability that it will be exploited in the next 30 days. That is higher than 82% of all scored CVEs.

How severe is CVE-2026-29042?

CVE-2026-29042 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-29042 affect?

Published advisories record a fix for nuclio (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-29042

Markdown

[![CVE-2026-29042](https://tridentstack.com/cve/badge/CVE-2026-29042.svg)](https://tridentstack.com/cve/CVE-2026-29042)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-29042"><img src="https://tridentstack.com/cve/badge/CVE-2026-29042.svg" alt="CVE-2026-29042"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-10.