Information disclosure in NST Labs Tech Nstbrowser Local Agent API
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure, Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-200 and CWE-284.
Summary
NST Labs Tech Nstbrowser version 1.21.0 has an information disclosure flaw in the /agent/info file of its Local Agent API. The flaw exposes sensitive information to an unauthorized actor (CWE-200). A remote attacker without privileges can obtain this information, but user interaction is required. The exploit has been publicly disclosed.
Written with Claude Haiku 5.5 from the sources below · 2026-11-05
Description from the CNA
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| NST Labs Tech | Nstbrowser | 1.21.0 | — | No fix listed | CNA |
- Nstbrowser VendorNST Labs Tech Affected 1.21.0 Fixed in — No fix listed CNA
CPE names CNA · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:nst_labs_tech:nstbrowser:*:*:*:*:*:*:*:* | — | — | NST Labs Tech |
- cpe:2.3:a:nst_labs_tech:nstbrowser:*:*:*:*:*:*:*:* Versions — — ·NST Labs Tech
Remediation
The sources list no fixed version for Nstbrowser.
Written with Claude Haiku 5.5 from the sources below · 2026-11-05
Timeline
- 2026-11-04 Threatist record created from CVE-2026-122028
- 2026-11-05 Alias added: GHSA-7whf-44vm-5p2x
References
More NST Labs Tech vulnerabilities
- TI-2026-85243 NST Labs Tech Nstbrowser stopAllBrowsers denial of service CVSS 4.0MEDIUM 5.3
Sources
- CVE-2026-122028 · CVE Program
- CVE-2026-122028 · NVD
- FIRST EPSS
- GHSA-7whf-44vm-5p2x · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences