Description
An issue was discovered in luci-app-https-dns-proxy on OpenWrt PR #15 (< 2026-01-17). The setInitAction function in /usr/libexec/rpcd/luci.https-dns-proxy allows authenticated users to execute arbitrary shell commands via shell metacharacters in the name parameter
Published: 2026-08-27
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution
Action: Immediate Patch
AI Analysis

Impact

The setInitAction function in /usr/libexec/rpcd/luci.https-dns-proxy accepts a name parameter from authenticated users and passes it directly to a shell without sanitization. This allows injection of shell metacharacters, leading to arbitrary command execution on the router, potentially compromising confidentiality, integrity, and availability.

Affected Systems

The vulnerability affects any OpenWrt device that includes the luci-app-https-dns-proxy package prior to the merge of pull request “#15” on January 17 2026. Systems where authenticated users can access the luci.https-dns-proxy endpoint through setInitAction are impacted.

Risk and Exploitability

An attacker must have valid credentials to access the LUCI interface but otherwise can inject commands and obtain full root privileges on the device. The CVSS score of 8.8 indicates high severity, while an EPSS score of <1% suggests a low current exploitation rate. The vulnerability is not listed in the CISA KEV catalog. Should exploitation occur, the attacker would gain complete control over the router.

Generated by OpenCVE AI on September 2, 2026 at 06:27 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply an updated version of luci-app-https-dns-proxy that removes or sanitizes the setInitAction entry point.
  • Disable or restrict access to the setInitAction functionality in the router’s configuration where the package is installed.
  • Ensure that only trusted administrators can access the LUCI interface and enforce least‑privilege principles.

Generated by OpenCVE AI on September 2, 2026 at 06:27 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 02 Sep 2026 08:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 02 Sep 2026 06:45:00 +0000

Type Values Removed Values Added
Title Command Injection in OpenWrt luci-app-https-dns-proxy Allows Arbitrary Shell Execution

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Thu, 27 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
Title Command Injection in OpenWrt luci-app-https-dns-proxy Allows Arbitrary Shell Execution
Weaknesses CWE-78

Thu, 27 Aug 2026 16:45:00 +0000

Type Values Removed Values Added
Description An issue was discovered in luci-app-https-dns-proxy on OpenWrt PR #15 (< 2026-01-17). The setInitAction function in /usr/libexec/rpcd/luci.https-dns-proxy allows authenticated users to execute arbitrary shell commands via shell metacharacters in the name parameter
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-01T19:21:28.180Z

Reserved: 2026-02-16T00:00:00.000Z

Link: CVE-2026-26899

cve-icon Vulnrichment

Updated: 2026-09-01T19:21:22.987Z

cve-icon NVD

Status : Deferred

Published: 2026-08-27T17:17:48.640

Modified: 2026-09-01T20:17:13.077

Link: CVE-2026-26899

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-02T06:30:07Z

Weaknesses
  • CWE-78

    Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')