Apache Wicket: crafted strings can break out of the JavaScript sequence

{
  "id": "0a1ee25a14e02c81215f725e7932e5801c70d1a38d93f2b126fe76b48f727226",
  "url": "https://osv.dev/vulnerability/CVE-2026-42509",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache Wicket: crafted strings can break out of the JavaScript sequence",
    "summary": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache Wicket. This issue affects Apache Wicket: from 8.0.0 through 8.17.0, 9.0.0, from 10.0.0 through 10.8.0. Users are recommended to upgrade to version 10.9.0, which fixes the issue.",
    "evidence": "osv:CVE-2026-42509",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-42509",
      "aliases": [
        "CVE-2026-42509",
        "GHSA-5x9h-93gp-chpj"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/wicket",
              "type": "GIT",
              "events": [
                {
                  "introduced": "5e789f1c98f6d57dba17f896c6220b0202af08a9"
                },
                {
                  "last_affected": "40c938700a5926a721516efafa3f69399404d2f5"
                },
                {
                  "introduced": "c2802f3ef8df9833da63d144fb4ad03d59e31acc"
                },
                {
                  "last_affected": "cf5a9db60de3d286d1f451736f0ef40e622ae09b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:wicket:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.0.0"
                      },
                      {
                        "last_affected": "8.17.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:wicket:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "9.0.0"
                      },
                      {
                        "last_affected": "9.22.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42509.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:40.206000540Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42509.json",
        "https://lists.apache.org/thread/52nrq4tt07gxz4r6sj5gyocz5s6bprjp",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-42509"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "apache",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.0.0"
                  },
                  {
                    "last_affected": "8.17.0"
                  },
                  {
                    "introduced": "9.0.0"
                  },
                  {
                    "last_affected": "9.22.0"
                  },
                  {
                    "introduced": "10.0.0"
                  },
                  {
                    "last_affected": "10.8.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42509.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-42509",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 507810,
  "published_at": "2026-05-06T08:34:00.746+00:00"
}