Answer in brief
CVE-2026-59800 records a Critical severity (CVSS 9.8) vulnerability in 9Router < 0.4.44 - OS Command Injection via sudoPassword Parameter in Tailscale Install Endpoint. The current sources do not mark it as known exploited. The current feed maps decolua/9router (generic), 9router (npm), 9router (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps decolua/9router (generic), 9router (npm), 9router (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| decolua/9routergeneric | >=0 <0.4.44 | 0.4.44 |
| 9routernpm | <0.4.45 | 0.4.45 |
| 9routernpm | <0.4.44 | 0.4.44 |
Published upstream
Jul 7, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 2, 2026
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).
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-59800 records a Critical severity (CVSS 9.8) vulnerability in 9Router < 0.4.44 - OS Command Injection via sudoPassword Parameter in Tailscale Install Endpoint. The current sources do not mark it as known exploited. The current feed maps decolua/9router (generic), 9router (npm), 9router (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps decolua/9router (generic), 9router (npm), 9router (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| decolua/9routergeneric | >=0 <0.4.44 | 0.4.44 |
| 9routernpm | <0.4.45 | 0.4.45 |
| 9routernpm | <0.4.44 | 0.4.44 |
Published upstream
Jul 7, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 2, 2026
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).
Quoted source text, attributed separately from HOL analysis.