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  4. CVE 2026 122020 nst labs tech nstbrowser local agent management
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Back to active CVEs
Medium · CVSS 5.3CVE-2026-122020

NST Labs Tech Nstbrowser Local Agent Management Service stopAll stopAllBrowsers denial of serviceCVE-2026-122020

Answer in brief

CVE-2026-122020 records a Medium severity (CVSS 5.3) vulnerability in NST Labs Tech Nstbrowser Local Agent Management Service stopAll stopAllBrowsers denial of service. The current sources do not mark it as known exploited. The current feed maps NST Labs Tech/Nstbrowser (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 4, 2026Updated Nov 4, 2026Source checked Nov 4, 2026First seen by HOL Nov 4, 2026Material review Nov 4, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 5.3. 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.

Affected scope and exposure questions

The current feed maps NST Labs Tech/Nstbrowser (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
NST Labs Tech/Nstbrowsergeneric1.2.0 || 1.2.1Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for NST Labs Tech/Nstbrowser.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 4, 2026

Sources and claim methodology

  • Source referencedrive.google.com
  • Source referencedrive.google.com
  • Source referencevuldb.com
  • Source referencevuldb.com
  • Source referencevuldb.com
  • Source referencevuldb.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • NST Labs Tech Nstbrowser Local Agent API info information disclosureSame nst labs tech/nstbrowser package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-404
Source
CVE List V5
Source checked
Nov 4, 2026
References
6 linked sources
Open source record