CVE-2026-58191 appium CVE debrief

Who should care

Users of Appium versions prior to 10.7.0 should be aware of this vulnerability and take steps to mitigate it. This includes reviewing and updating any custom or third-party components using Appium, implementing additional security measures such as input validation and output encoding, and monitoring for potential exploitation attempts. Security teams and vulnerability management teams should prioritize this vulnerability due to its potential impact on the security of affected deployments.

Technical summary

The vulnerability exists in Appium's base-driver, where certain routes are unconditionally mounted and user input is reflected into HTML without proper escaping. This allows for reflected cross-site scripting and arbitrary JavaScript execution on the server origin. The affected routes include /test/guinea-pig, /test/guinea-pig-scrollable, and /test/guinea-pig-app-banner. The issue is fixed in Appium version 10.7.0, and users of affected versions should upgrade to this or later versions.

Defensive priority

Medium priority due to the CVSS score of 6.5 and the availability of a fix in version 10.7.0.

Recommended defensive actions

• Upgrade Appium to version 10.7.0 or later
• Review and update any custom or third-party components using Appium
• Implement additional security measures such as input validation and output encoding
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-07-08T21:16:52.013Z and last modified on 2026-07-10T19:13:03.283Z. The NVD entry is currently Awaiting Analysis. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the vendor. The issue is fixed in Appium version 10.7.0, but additional verification is needed to confirm the impact on specific deployments.

Official resources