What is CVE-2026-38822?

CVE-2026-38822 is a high-severity vulnerability in Opennds, classified under OS Command Injection. CVSS score: 7.6/10. Published 2026-08-28.

How severe is CVE-2026-38822?

High severity. CVSS v3 base score is 7.6 out of 10.

RCE in Opennds

CVE-2026-38822

In openNDS before 11.0.0, the client_params.sh script, invoked by the openNDS daemon to serve the authenticated client status page, is vulnerable to OS command injection through crafted HTTP GET query parameter keys. An authenticated captive portal user can inject arbitrary shell commands by embedding semicolons in a URL query parameter name.

Vulnerability class: Command Injection (OS Command Injection)

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.

Affected products

Opennds

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

cve@mitre.org

Frequently asked questions

What is CVE-2026-38822?: CVE-2026-38822 is a high-severity vulnerability in Opennds, classified under OS Command Injection. CVSS score: 7.6/10. Published 2026-08-28.
How severe is CVE-2026-38822?: High severity. CVSS v3 base score is 7.6 out of 10.