Command injection in h-ui administrative API
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-77.
Summary
The h-ui administrative API in jonssonyan h-ui, version v0.0.25 and below, is affected. The listen configuration field is not validated, so shell metacharacters are passed into nftables and iptables rule strings that the application executes as root (CWE-77). An authenticated administrator can inject arbitrary operating system commands that run with root privileges.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
A command injection vulnerability exists in the h-ui (version v0.0.25 and below) administrative API due to improper validation of the listen configuration field. When an authenticated administrator submits a value containing shell metacharacters, the application constructs nftables/iptables rule strings using fmt.Sprintf and executes them via bash -c as root. Because the listen field lacks port or format validation, arbitrary OS commands can be injected and executed with root privileges.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| jonssonyan | h-ui | 0.0.25 | — | No fix listed | CNA |
- h-ui Vendorjonssonyan Affected 0.0.25 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for h-ui.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-07 Threatist record created from CVE-2026-107202
- 2026-10-07 Alias added: GHSA-qrj2-qqx7-wqxq
- 2026-10-07 CVSS score added · CISA ADP
- 2026-10-07 Weakness changed · CISA ADP
- 2026-10-07 CISA SSVC decision points changed
- 2026-10-07 Priority changed: LOW → MEDIUM
References
Sources
- CVE-2026-107202 · CVE Program
- CVE-2026-107202 · NVD
- FIRST EPSS
- GHSA-qrj2-qqx7-wqxq · GitHub Advisory Database · CC BY 4.0
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