CVE-2026-59800: 9Router < 0.4.44 - OS Command Injection via sudoPassword Parameter in Tailscale Install Endpoint
decolua · 9router
Fixed in 0.4.44 · Affected: decolua 9router before 0.4.44 · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 81% of scored CVEs
DescriptionCVE.org
9Router before 0.4.44 contains an OS command injection vulnerability in the unauthenticated POST /api/tunnel/tailscale-install endpoint (this route is not covered by the dashboard middleware matcher, so no authorization check is applied). The sudoPassword field from the request body is written to the stdin of a 'sudo -S sh' child process. When sudo does not prompt for a password (the process runs as root, NOPASSWD is configured, or a recent sudo timestamp cache exists), the sudoPassword value is interpreted by sh as a shell command, allowing a remote unauthenticated attacker to execute arbitrary OS commands. Exploitation evidence was first observed by the Shadowserver Foundation on 2026-07-04 (UTC).
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- decolua · 9routerbefore 0.4.44
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-59800 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.