PatchSiren cyber security CVE debrief
CVE-2026-15329 zhayujie CVE debrief
CVE-2026-15329 is an information disclosure vulnerability in CowAgent's Browser Tool. The issue affects the BrowserTool._do_navigate function in agent/tools/browser/browser_tool.py. The vulnerability allows remote attackers to disclose sensitive information. The exploit has been made public, and the project has been informed but has not responded yet. This vulnerability has a low severity and requires limited privileges to exploit.
- Vendor
- zhayujie
- Product
- CowAgent
- CVSS
- LOW 2.1
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-07-10
- Original CVE updated
- 2026-07-10
- Advisory published
- 2026-07-10
- Advisory updated
- 2026-07-10
Who should care
Users of CowAgent up to version 2.1.0 should be aware of this vulnerability and take necessary precautions to protect their systems, including reviewing system configurations, monitoring for suspicious activity, and applying patches or updates as soon as they are available.
Technical summary
The vulnerability is caused by a manipulation of the BrowserTool._do_navigate function in agent/tools/browser/browser_tool.py. This function is part of the Browser Tool component in CowAgent. The vulnerability has a CVSS score of 2.1 and a severity of LOW. The CVSS vector is CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.
Defensive priority
This vulnerability has a low severity and requires limited privileges to exploit. However, it is still important to address this issue to prevent potential information disclosure.
Recommended defensive actions
- Inventory and verify affected CowAgent installations
- Apply vendor patches or updates when available
- Implement compensating controls to monitor and restrict access to sensitive information
- Monitor for potential exploitation attempts
- Review system configurations and ensure proper security controls are in place
- Conduct regular security audits to identify potential vulnerabilities
- Establish a incident response plan in case of a security breach
Evidence notes
The CVE record was published on 2026-07-10T04:17:50.590Z and was last modified on 2026-07-10T15:43:30.330Z. The NVD entry is currently Deferred. The project was informed of the problem early through an issue report but has not responded yet. The vulnerability has a CVSS score of 2.1 and a severity of LOW.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-10T04:17:50.590Z and has not been modified since then. The NVD entry is currently Deferred.