{
  "document": {
    "aggregate_severity": {
      "text": "MEDIUM"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "other",
        "text": "Low",
        "title": "Risk Level for Nozomi customers"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "Nozomi Networks Product Security team can be reached at prodsec@nozominetworks.com",
      "name": "Nozomi Networks Product Security",
      "namespace": "https://security.nozominetworks.com/psirt"
    },
    "title": "HTML injection in Diagram tab and Graph view in Guardian/CMC before 26.2.0",
    "tracking": {
      "aliases": [
        "CVE-2026-31981"
      ],
      "current_release_date": "2026-07-07T11:00:00.000Z",
      "id": "NN-2026:8-01",
      "initial_release_date": "2026-07-07T11:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-07-07T11:00:00.000Z",
          "number": "1",
          "summary": "Initial revision"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:gem/<26.2.0",
                "product": {
                  "name": "Nozomi Networks Guardian <26.2.0",
                  "product_id": "CSAFPID-0001"
                }
              },
              {
                "category": "product_version",
                "name": "26.2.0",
                "product": {
                  "name": "Nozomi Networks Guardian 26.2.0",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "Guardian"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:gem/<26.2.0",
                "product": {
                  "name": "Nozomi Networks CMC <26.2.0",
                  "product_id": "CSAFPID-0003"
                }
              },
              {
                "category": "product_version",
                "name": "26.2.0",
                "product": {
                  "name": "Nozomi Networks CMC 26.2.0",
                  "product_id": "CSAFPID-0004"
                }
              }
            ],
            "category": "product_name",
            "name": "CMC"
          }
        ],
        "category": "vendor",
        "name": "Nozomi Networks"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Stefano Libero",
            "Andrea Palanca"
          ],
          "organization": "Nozomi Networks Product Security team",
          "summary": "finding this issue during an internal investigation"
        }
      ],
      "cve": "CVE-2026-31981",
      "cwe": {
        "id": "CWE-79",
        "name": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"
      },
      "discovery_date": "2026-07-07T11:00:00.000Z",
      "ids": [
        {
          "system_name": "Nozomi Networks Security Advisory ID",
          "text": "NN-2026:8-01"
        }
      ],
      "notes": [
        {
          "category": "summary",
          "text": "A Stored HTML Injection vulnerability was discovered in the Diagram tab and Graph view due to a shared input validation function being insufficiently restrictive.",
          "title": "Vulnerability summary"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-0002",
          "CSAFPID-0004"
        ],
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0003"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "Mitre CVE entry",
          "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-31981"
        },
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://security.nozominetworks.com/csaf/2026/nn-2026_8-01.json"
        },
        {
          "category": "self",
          "summary": "Human-readable advisory.",
          "url": "https://security.nozominetworks.com/NN-2026:8-01"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "Use internal firewall features to limit access to the web management interface. Review all accounts with administrative access to it and delete unnecessary ones.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0003"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Upgrade to v26.2.0 or later.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0003"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0003"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "An authenticated user with administrative privileges can inject malicious HTML tags into N2OS configuration data through multiple input vectors. When a victim views the affected data in the Diagram tab and Graph view, the injected HTML renders in their browser, enabling phishing and possibly open redirect attacks. Full XSS exploitation and direct information disclosure are prevented by the existing input validation and Content Security Policy configuration."
        }
      ],
      "title": "HTML injection in Diagram tab and Graph view in Guardian/CMC before 26.2.0"
    }
  ]
}