CVE-2026-122020mediumCWE-404

CVE-2026-122020: medium-severity vulnerability in Nstbrowser

NST Labs Tech Nstbrowser Local Agent Management Service stopAll stopAllBrowsers denial of service

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30Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 5.3
A security flaw has been discovered in NST Labs Tech Nstbrowser up to 1.2.1. The affected element is the function stopAllBrowsers of the file /api/agent/browser/stopAll of the component Local Agent Management Service. Performing a manipulation results in denial of service. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
NST Labs Tech · Nstbrowser
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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