An issue was discovered in luci-app-https-dns-proxy on OpenWrt PR #15 (< 2026-01-17). (CVE-2026-26899)
Description
A command injection vulnerability exists in the setInitAction function of luci-app-https-dns-proxy on OpenWrt PR #15 versions before 2026-01-17. Authenticated users can exploit shell metacharacters in the name parameter to execute arbitrary shell commands.
CVSS v3.1
Score 8.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-26899 describes a command injection vulnerability in luci-app-https-dns-proxy on OpenWrt PR #15 prior to 2026-01-17. The flaw is in the setInitAction function located at /usr/libexec/rpcd/luci.https-dns-proxy, where insufficient sanitization of the name parameter allows authenticated users to inject shell metacharacters and execute arbitrary shell commands. This vulnerability is classified under CWE-78 (Improper Neutralization of Special Elements used in an OS Command).
Potential Impact
Successful exploitation allows an authenticated user to execute arbitrary shell commands with the privileges of the affected service, potentially leading to full system compromise, data loss, or service disruption. The CVSS 3.1 score is 8.8 (High), reflecting network attack vector, low attack complexity, required privileges, no user interaction, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
No official patch or remediation guidance is currently provided. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to authenticated users and monitor for suspicious activity related to the luci-app-https-dns-proxy component.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-fg7r-8jq7-f2g6
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-26899"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a98458facd9273b496ade1d
Added to database: 09/02/2026, 15:49:35 UTC
Last enriched: 09/07/2026, 18:38:19 UTC
Last updated: 10/15/2026, 18:48:19 UTC
Views: 30
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