CVE-2026-114278: Unauthenticated Command Injection via kubeconfig Username in che-machine-exec
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-08 00:03 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
The che-machine-exec service constructs a shell command by concatenating user-controlled input (the username and namespace fields from the /exec/init and /exec/config JSON endpoints) into a double-quoted sh -c “echo “...” > ...” invocation without any escaping. When che-machine-exec is run with authentication disabled (its default), any network-reachable attacker can achieve remote code execution in containers che-machine-exec is configured to access, via shell command substitution ($(...) or backticks).
Description quoted from the CVE record (assigned by eclipse, published 2026-10-28).
Weakness: CWE-78
How it can be exploited
Exploitable over the network with low attack complexity needing no privileges and no user interaction. Impact: confidentiality high, integrity high, availability high. CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA assessment (SSVC): CISA assesses that a public proof of concept exists. Automatable: yes. Technical impact: total.
Public exploit evidence (Exploit Observer)
Exploit Observer found 3 code repositories naming this CVE.
Code repositories that name a CVE are often scanners, copies or fakes, and some are malware. Read the code before running anything.
See all 5 references on Exploit Observer
Live scores
- EPSS
- 0.009
low predicted chance of attack - VEDAS
- 0.986
strong exploit evidence - On CISA KEV
- Not listed
- Detection rule
- Suricata
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| Eclipse Foundation Eclipse Che | from 7.0.0 up to and including 7.122.0 | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
No fixed version or vendor advisory is listed in the CVE record yet. Watch the vendor’s security page.
How to detect it
Suricata rules (network detection)
1 rule that alert on traffic matching this exploit: VEDAS CVE-2026-114278 Che-Machine-Exec - Unauthenticated OS Command Injection. Add them to your Suricata rule set and reload.
Show the rules
alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-114278 Che-Machine-Exec - Unauthenticated OS Command Injection"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/exec/"; nocase; fast_pattern; http.request_body; content:"kubeconfig"; nocase; pcre:"/\"(?:username|namespace)\"\s*:\s*\"[^\"]*(?:\x24\x28|\x60)/i"; classtype:web-application-attack; reference:cve,CVE-2026-114278; reference:url,https://www.exploit.observer/?keyword=CVE-2026-114278&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=che-machine-exec&match=exact; sid:1089801; rev:1;)
CVE-2026-114278.rules on GitHub
References
Other references
- https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/359
- https://github.com/eclipse-che/che-machine-exec/commit/a78541c29e5f48fd59a49cf206bc0e507628bd23
- https://gitlab.eclipse.org/security/cve-assignment/-/work_items/476
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.
Supporting partners
