CVE-2026-84425 (GCVE-0-2026-84425)

Vulnerability from cvelistv5 – Published: 2026-09-02 00:15 – Updated: 2026-09-02 00:15
VLAI
Title
zhayujie CowAgent Browser Tool browser_tool.py BrowserTool denial of service
Summary
A vulnerability was found in zhayujie CowAgent up to 2.1.3. This impacts the function BrowserTool of the file agent/tools/browser/browser_tool.py of the component Browser Tool. Performing a manipulation results in denial of service. The attack can be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
4.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/397792 vdb-entrytechnical-description
https://vuldb.com/vuln/397792/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-84425 third-party-advisory
https://vuldb.com/submit/884017 third-party-advisory
https://github.com/hackerguopeng/cve/tree/main/Co… exploit
Impacted products
Vendor Product Version CPE status
zhayujie CowAgent Affected: 2.1.0
Affected: 2.1.1
Affected: 2.1.2
Affected: 2.1.3
    cpe:2.3:a:zhayujie:cowagent:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
hackerguopeng (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

{
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        {
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            "cpe:2.3:a:zhayujie:cowagent:*:*:*:*:*:*:*:*"
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          ],
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          "versions": [
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            },
            {
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              "version": "2.1.1"
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            },
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        }
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      "title": "zhayujie CowAgent Browser Tool browser_tool.py BrowserTool denial of service",
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  },
  "cveMetadata": {
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    "datePublished": "2026-09-02T00:15:11.549Z",
    "dateReserved": "2026-09-01T17:56:15.495Z",
    "dateUpdated": "2026-09-02T00:15:11.549Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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