{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "11.1.10"
                  },
                  {
                    "fixed": "11.4.14"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "introduced": "12.0.0-alpha.4"
                  },
                  {
                    "fixed": "12.0.0-alpha.5"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "introduced": "= 9.14.5"
                  },
                  {
                    "last_affected": "= 9.14.5"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandaloneSingleVersion"
              },
              {
                "range": [
                  {
                    "introduced": "= 10.0.8"
                  },
                  {
                    "last_affected": "= 10.0.8"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandaloneSingleVersion"
              },
              {
                "range": [
                  {
                    "fixed": "43391d20e7c85403cb59bdb21b5d542819f54042"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v11.4.14",
                "range": [
                  {
                    "fixed": "6bb9ebdeae4955cafb53e82bc461199f6186f573"
                  }
                ],
                "source": "REFERENCES_TAG"
              },
              {
                "original_tag": "v12.0.0-alpha.5",
                "range": [
                  {
                    "fixed": "2c2819246e15f3c8a018aa63887c9c31e3fe5455"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "ecbbd3a22361ce644a9185828cb4161daf528223"
            },
            {
              "fixed": "6bb9ebdeae4955cafb53e82bc461199f6186f573"
            },
            {
              "introduced": "dad48fc9e3761bd885117dd6c7dde1ebee8fdf91"
            },
            {
              "fixed": "2c2819246e15f3c8a018aa63887c9c31e3fe5455"
            },
            {
              "introduced": "924596094e3123251efb3b0ae2d93bbd4a5742ce"
            },
            {
              "fixed": "43391d20e7c85403cb59bdb21b5d542819f54042"
            }
          ],
          "repo": "https://github.com/intlify/vue-i18n",
          "type": "GIT"
        }
      ],
      "versions": [
        "= 10.0.8",
        "= 9.14.5"
      ]
    }
  ],
  "aliases": [
    "GHSA-83rm-6c8r-g728"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-116",
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/118xxx/CVE-2026-118257.json"
  },
  "details": "Vue I18n is the internationalization plugin for Vue.js. From 11.1.10 until 11.4.14 and from 12.0.0-alpha.4 until 12.0.0-alpha.5, sanitizeTranslatedHtml() escapes markup and event-handler text inside an iframe srcdoc value but leaves the srcdoc attribute active. Browsers decode the character references and parse the value as a same-origin nested HTML document, allowing attacker-controlled parameters or translation content placed in srcdoc to execute script when applications enable escapeParameter and render translations as HTML through v-html. Versions 9.14.5 and 10.0.8 are also affected and are no longer supported, while i18n-t rendering is not affected. This issue is fixed in versions 11.4.14 and 12.0.0-alpha.5.",
  "id": "CVE-2026-118257",
  "modified": "2026-10-30T10:30:43.049983628Z",
  "published": "2026-10-28T18:23:49.400Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/intlify/vue-i18n/releases/tag/v11.4.14"
    },
    {
      "type": "WEB",
      "url": "https://github.com/intlify/vue-i18n/releases/tag/v12.0.0-alpha.5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/118xxx/CVE-2026-118257.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/intlify/vue-i18n/security/advisories/GHSA-83rm-6c8r-g728"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-118257"
    },
    {
      "type": "FIX",
      "url": "https://github.com/intlify/vue-i18n/commit/43391d20e7c85403cb59bdb21b5d542819f54042"
    },
    {
      "type": "FIX",
      "url": "https://github.com/intlify/vue-i18n/pull/2679"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Vue I18n: escapeParameter does not prevent XSS through srcdoc in translation messages"
}