Reflected cross-site scripting in the video library of the Regional Parliament of Castile-La Mancha

{
  "id": "3994db2f5bb7d56719cd03671affb32b100dd18e8d771d392b2f60b444f8d25e",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-103377",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Reflected cross-site scripting in the video library of the Regional Parliament of Castile-La Mancha",
    "summary": "A reflected Cross-Site Scripting (XSS) vulnerability has been identified in the web application of the Castile-La Mancha Regional Parliament’s video library. The application embeds user-supplied content into the page without properly sanitising it before it is rendered by the browser. Exploitation of this vulnerability could allow a remote attacker to execute arbitrary JavaScript code in the browser of a victim who interacts with the content crafted for the attack.",
    "evidence": "cve:CVE-2026-103377",
    "products": [
      {
        "name": {
          "value": "Video library of the Regional Parliament of Castile-La Mancha",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-103377",
      "aliases": [
        "CVE-2026-103377"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "Safety": "NOT_DEFINED",
            "version": "4.0",
            "Recovery": "NOT_DEFINED",
            "baseScore": 5.1,
            "Automatable": "NOT_DEFINED",
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
            "exploitMaturity": "NOT_DEFINED",
            "providerUrgency": "NOT_DEFINED",
            "userInteraction": "ACTIVE",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "vulnConfidentialityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "Regional Parliament of Castile-La Mancha",
          "product": "Video library of the Regional Parliament of Castile-La Mancha",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "October 2026",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-26T14:35:18.848Z",
      "provider": "cve",
      "references": [
        "https://www.incibe.es/en/incibe-cert/notices/aviso/reflected-cross-site-scripting-video-library-regional-parliament-castile"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-103377",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-26T13:33:03.246641Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-26T14:35:18.848Z"
            }
          }
        ],
        "cna": {
          "orgId": "0cbda920-cd7f-484a-8e76-bf7f4b7f4516",
          "shortName": "INCIBE",
          "dateUpdated": "2026-10-26T09:29:50.749Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-103377",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 311587,
  "published_at": "2026-10-26T09:29:50.749+00:00"
}