CVE-2025-40899 (GCVE-0-2025-40899)

Vulnerability from cvelistv5 – Published: 2026-04-15 08:18 – Updated: 2026-08-11 12:22
VLAI
Title
Stored Cross-Site Scripting (XSS) in Assets and Nodes in Guardian/CMC before 26.0.0
Summary
A Stored Cross-Site Scripting vulnerability was discovered in the Assets and Nodes functionality due to improper validation of an input parameter. An authenticated user with custom fields privileges can define a malicious custom field containing a JavaScript payload. When the victim views the Assets or Nodes pages, the XSS executes in their browser context, allowing the attacker to perform unauthorized actions as the victim, such as modify application data, disrupt application availability, and access limited sensitive information.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-15 13:20 UTC
CWE
  • CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
Nozomi CNA under the mitre root
CNA scorecard B 81/100 over 60 records in the last 180 days details
Impacted products
Vendor Product Version CPE status
Nozomi Networks Guardian Affected: 0 , < 26.0.0 (semver)
    cpe:2.3:a:nozomi_networks:guardian:*:*:*:*:*:*:*:*
Create a notification for this product.
Nozomi Networks CMC Affected: 0 , < 26.0.0 (semver)
    cpe:2.3:a:nozomi_networks:cmc:*:*:*:*:*:*:*:*
Create a notification for this product.
Siemens RUGGEDCOM APE1808 Affected: 0 , < * (custom)
guessed Create a notification for this product.
Date Public
2026-04-15 07:00
Show details on NVD website

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                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
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                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:H",
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              "descriptions": [
                {
                  "cweId": "CWE-79",
                  "description": "CWE-79 Improper neutralization of input during web page generation (\u0027cross-site scripting\u0027)",
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            "dateUpdated": "2026-04-15T08:18:36.427Z",
            "orgId": "bec8025f-a851-46e5-b3a3-058e6b0aa23c",
            "shortName": "Nozomi"
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              "url": "https://security.nozominetworks.com/NN-2026:2-01"
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          ],
          "solutions": [
            {
              "lang": "en",
              "supportingMedia": [
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                  "base64": false,
                  "type": "text/html",
                  "value": "Upgrade to v26.0.0 or later.\u003cbr\u003e"
                }
              ],
              "value": "Upgrade to v26.0.0 or later."
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          ],
          "source": {
            "discovery": "INTERNAL"
          },
          "title": "Stored Cross-Site Scripting (XSS) in Assets and Nodes in Guardian/CMC before 26.0.0",
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              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Use internal firewall features to limit access to the web management interface.\u003cbr\u003e"
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              ],
              "value": "Use internal firewall features to limit access to the web management interface."
            },
            {
              "lang": "en",
              "supportingMedia": [
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                  "base64": false,
                  "type": "text/html",
                  "value": "Review all accounts with access to it and delete unnecessary ones.\u003cbr\u003e"
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              "value": "Review all accounts with access to it and delete unnecessary ones."
            },
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              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Review existing custom fields.\u003cbr\u003e"
                }
              ],
              "value": "Review existing custom fields."
            }
          ],
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        "assignerOrgId": "bec8025f-a851-46e5-b3a3-058e6b0aa23c",
        "assignerShortName": "Nozomi",
        "cveId": "CVE-2025-40899",
        "datePublished": "2026-04-15T08:18:36.427Z",
        "dateReserved": "2025-04-16T09:04:35.923Z",
        "dateUpdated": "2026-08-11T12:22:57.206Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.