zhayujie CowAgent Browser Tool browser_tool.py BrowserTool._do_navigate information disclosure (CVE-2026-15329) | HOL Guard CVE

Medium · CVSS 4.3CVE-2026-15329

zhayujie CowAgent Browser Tool browser_tool.py BrowserTool._do_navigate information disclosure

Answer in brief

CVE-2026-15329 records a Medium severity (CVSS 4.3) vulnerability in zhayujie CowAgent Browser Tool browser_tool.py BrowserTool._do_navigate information disclosure. The current sources do not mark it as known exploited. The current feed maps zhayujie/CowAgent (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 Jul 10, 2026Updated Jul 14, 2026Source checked Sep 19, 2026First seen by HOL Jul 10, 2026Material review Jul 14, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 4.3
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 4.3. 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 zhayujie/CowAgent (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
zhayujie/CowAgentgeneric	2.0 \|\| 2.1.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for zhayujie/CowAgent.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Jul 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Jul 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jul 10, 2026

Sources and claim methodology

Upstream source description

A vulnerability was found in zhayujie CowAgent up to 2.1.0. This issue affects the function BrowserTool._do_navigate of the file agent/tools/browser/browser_tool.py of the component Browser Tool. Performing a manipulation results in information disclosure. The attack can be initiated remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

Quoted source text, attributed separately from HOL analysis.