{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-63135",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-26T17:40:19.146156Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-26T17:40:42.981Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/YOURLS/YOURLS/security/advisories/GHSA-5h77-88j3-r659"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "YOURLS",
          "vendor": "YOURLS",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.5.1, \u003c 1.10.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "YOURLS is a self-hosted, customizable URL shortener written in PHP. From 1.5.1 until 1.10.4, YOURLS stores the HTTP Referer header through yourls_get_referrer(), yourls_sanitize_url_safe(), and yourls_log_redirect(), then aggregates the value in yourls-infos.php and passes the derived domain through yourls_get_domain(), yourls_stats_pie(), and yourls_google_array_to_data_table(). The chart builder concatenates labels into inline JavaScript without JavaScript-string escaping, so an unauthenticated attacker can poison the statistics of an existing short URL with a crafted referrer. When an administrator or public stats-page viewer opens the affected statistics page, attacker-controlled JavaScript executes in the YOURLS origin and can access admin-visible data, the API signature token, and privileged same-origin actions. This issue is fixed in version 1.10.4."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-21T20:40:08.199Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/YOURLS/YOURLS/security/advisories/GHSA-5h77-88j3-r659",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/YOURLS/YOURLS/security/advisories/GHSA-5h77-88j3-r659"
        },
        {
          "name": "https://github.com/YOURLS/YOURLS/pull/4107",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/YOURLS/YOURLS/pull/4107"
        },
        {
          "name": "https://github.com/YOURLS/YOURLS/commit/e1e93476655107e6caab34e52259eb1c91079ec7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/YOURLS/YOURLS/commit/e1e93476655107e6caab34e52259eb1c91079ec7"
        },
        {
          "name": "https://github.com/YOURLS/YOURLS/releases/tag/1.10.4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/YOURLS/YOURLS/releases/tag/1.10.4"
        }
      ],
      "source": {
        "advisory": "GHSA-5h77-88j3-r659",
        "discovery": "UNKNOWN"
      },
      "title": "YOURLS: Stored XSS in referrer statistics chart via crafted Referer header"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-63135",
    "datePublished": "2026-08-21T20:40:08.199Z",
    "dateReserved": "2026-07-15T16:54:55.817Z",
    "dateUpdated": "2026-08-26T17:40:42.981Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}