---
title: "CVE-2026-38992: Cockpit is vulnerable to arbitrary code execution"
url: https://erroneo.us/security/cve/CVE-2026-38992/
description: "CVE-2026-38992 (cockpit-hq/cockpit (Composer (PHP))): Cockpit v2.13.5 and earlier is vulnerable to arbitrary code execution via the filter parameter within…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-04-29
date_modified: 2026-05-06
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-38992"
kev: false
cvss: 9.8
epss: 0.00726
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-38992: Cockpit is vulnerable to arbitrary code execution

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.7% , percentile 54: FIRST’s model estimates a 0.7% chance of exploitation activity in the next 30 days, higher than 54% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes cockpit-hq/cockpit (Composer (PHP)) < 2.14.0, fixed in 2.14.0 . Check your lockfile, including transitive dependencies.

## What it is

Cockpit v2.13.5 and earlier is vulnerable to arbitrary code execution via the filter parameter within multiple endpoints. This vulnerability allows an attacker to run system commands on the underlying infrastructure via the MongoLite $func operator.

## Affected packages

- Composer (PHP) `cockpit-hq/cockpit` < 2.14.0 → fixed: 2.14.0

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.73% probability of exploitation activity in the next 30 days; percentile 54.

## Sources

- [GitHub Advisory GHSA-fm6c-rhcf-7439](https://github.com/advisories/GHSA-fm6c-rhcf-7439)
- [CVE.org record CVE-2026-38992](https://www.cve.org/CVERecord?id=CVE-2026-38992)
- [NVD entry CVE-2026-38992](https://nvd.nist.gov/vuln/detail/CVE-2026-38992)
- [github.com](https://github.com/Cockpit-HQ/Cockpit/releases/tag/2.14.0)
- [felsec.com](https://felsec.com/posts/cockpit-cms-2.13.5-multi-vulns/)

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Source page: https://erroneo.us/security/cve/CVE-2026-38992/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt