Information disclosure in Nst Labs Tech Nstbrowser
CVE-2026-122028
A vulnerability has been found in NST Labs Tech Nstbrowser 1.21.0. Affected by this vulnerability is an unknown functionality of the file /agent/info of the component Local Agent API. Such manipulation leads to information disclosure. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Nst Labs Tech Nstbrowser — versions 1.21.0
Weakness classification (CWE)
References
- drive.google.com/drive/folders/135l_IZU955OmUNC5so83IiixlPPJp5X1 (exploit)
- drive.google.com/drive/folders/135l_IZU955OmUNC5so83IiixlPPJp5X1 (related)
- CVE-2026-122028 | CVE Analysis and Report (third-party-advisory)
- Submit #1025065 | https://www.nstbrowser.io/en nstbroswer 1.21.0 sensitive logic exposure leading to fingerprint broswer track (third-party-advisory)
- VDB-431091 | NST Labs Tech Nstbrowser Local Agent API info information disclosure (vdb-entry)
- VDB-431091 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-122028?
- CVE-2026-122028 is a medium-severity vulnerability in Nst Labs Tech Nstbrowser, classified under Information Disclosure. CVSS score: 4.3/10. Published 2026-11-04.
- How severe is CVE-2026-122028?
- Medium severity. CVSS v3 base score is 4.3 out of 10.