VA-26-296-01

Vulnerability from csaf_cisa - Published: 2026-10-22 17:13 - Updated: 2026-10-22 17:13
Summary
AgentZero XSS
Notes
Legal Notice: All information products included in [https://github.com/cisagov/CSAF/tree/develop/csaf_files/IT/white](https://github.com/cisagov/CSAF/tree/develop/csaf_files/IT/white) are provided \"as is\" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see [https://us-cert.cisa.gov/tlp/](https://us-cert.cisa.gov/tlp/).
Countries and Areas Deployed: Worldwide
Critical Infrastructure Sectors: Information Technology
Risk Evaluation: The Agent Zero Web UI before 1.15 does not correctly sanitize user-provided input in chat messages or file uploads. When Agent Zero reproduces content in the chat interface, any injected JavaScript is executed in the context of the victim’s authenticated Agent Zero Web UI session.
Recommended Practices: Fixed in 1.15.
Company Headquarters Location: United States
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected products
Product Identifier Version Remediation
Agent Zero Agent Zero <1.15
Agent Zero / Agent Zero
<1.15
Vendor Fix fix
Product Identifier Version Remediation
Agent Zero Agent Zero 1.15
Agent Zero / Agent Zero
1.15
Vendor Fix fix

{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "All information products included in [https://github.com/cisagov/CSAF/tree/develop/csaf_files/IT/white](https://github.com/cisagov/CSAF/tree/develop/csaf_files/IT/white) are provided \\\"as is\\\" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see [https://us-cert.cisa.gov/tlp/](https://us-cert.cisa.gov/tlp/).",
        "title": "Legal Notice"
      },
      {
        "category": "other",
        "text": "Worldwide",
        "title": "Countries and Areas Deployed"
      },
      {
        "category": "other",
        "text": "Information Technology",
        "title": "Critical Infrastructure Sectors"
      },
      {
        "category": "summary",
        "text": "The Agent Zero Web UI before 1.15 does not correctly sanitize user-provided input in chat messages or file uploads. When Agent Zero reproduces content in the chat interface, any injected JavaScript is executed in the context of the victim\u2019s authenticated Agent Zero Web UI session.",
        "title": "Risk Evaluation"
      },
      {
        "category": "general",
        "text": "Fixed in 1.15.",
        "title": "Recommended Practices"
      },
      {
        "category": "other",
        "text": "United States",
        "title": "Company Headquarters Location"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "https://www.cisa.gov/report",
      "issuing_authority": "CISA",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "self",
        "summary": "Vulnerability Advisory VA-26-296-01 CSAF",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-296-01.json"
      }
    ],
    "title": "AgentZero XSS",
    "tracking": {
      "current_release_date": "2026-10-22T17:13:57Z",
      "generator": {
        "engine": {
          "name": "VINCE-NT",
          "version": "1.15.0+build.129"
        }
      },
      "id": "VA-26-296-01",
      "initial_release_date": "2026-10-22T17:13:57Z",
      "revision_history": [
        {
          "date": "2026-10-22T17:13:57Z",
          "number": "1.0.0",
          "summary": "Initial publication"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c1.15",
                "product": {
                  "name": "Agent Zero Agent Zero \u003c1.15",
                  "product_id": "CSAFPID-0001"
                }
              },
              {
                "category": "product_version",
                "name": "1.15",
                "product": {
                  "name": "Agent Zero Agent Zero 1.15",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "Agent Zero"
          }
        ],
        "category": "vendor",
        "name": "Agent Zero"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Joshua Wells"
          ],
          "organization": "Vexel Foundation"
        },
        {
          "names": [
            "Muhammad Ali"
          ],
          "organization": "Vexel Foundation"
        }
      ],
      "cve": "CVE-2026-97635",
      "cwe": {
        "id": "CWE-79",
        "name": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The Agent Zero Web UI before 1.15 does not correctly sanitize user-provided input in chat messages or file uploads. When Agent Zero reproduces content in the chat interface, any injected JavaScript is executed in the context of the victim\u2019s authenticated Agent Zero Web UI session.",
          "title": "Description"
        },
        {
          "category": "details",
          "text": "SSVCv2/E:N/A:N/T:P/2026-09-24T17:22:29Z/",
          "title": "SSVC"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-0002"
        ],
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "github.com",
          "url": "https://github.com/agent0ai/agent-zero/releases/tag/v1.15"
        },
        {
          "category": "external",
          "summary": "github.com",
          "url": "https://github.com/agent0ai/agent-zero/issues/943"
        },
        {
          "category": "external",
          "summary": "www.cve.org",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-97635"
        },
        {
          "category": "external",
          "summary": "raw.githubusercontent.com",
          "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-296-01.json"
        }
      ],
      "release_date": "2026-01-22T00:00:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-05-15T00:00:00Z",
          "details": "Fixed in 1.15.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://github.com/agent0ai/agent-zero/releases/tag/v1.15"
        },
        {
          "category": "vendor_fix",
          "date": "2026-05-15T00:00:00Z",
          "details": "Fixed in 1.15.",
          "product_ids": [
            "CSAFPID-0002"
          ],
          "url": "https://github.com/agent0ai/agent-zero/releases/tag/v1.15"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ],
      "title": "Agent Zero Web UI XSS"
    }
  ]
}



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