{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "24.05.50"
              },
              {
                "introduced": "25.03"
              },
              {
                "fixed": "25.03.44"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "e702a104d7616b1a96458da9fbf36144c5dd5ef4"
            },
            {
              "introduced": "5890b94d9783feffa3d2acafba1d94d67b2ae4e6"
            },
            {
              "fixed": "6050a3b1bcb0376701dbf68e346ac261363f5dfa"
            }
          ],
          "repo": "https://github.com/countly/countly-server",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-jqp4-p86c-phxc"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44977.json"
  },
  "details": "countly-server is the server-side part of Countly, a product analytics solution. Prior to 24.05.50 and 25.03.44, plugins/star-rating/api/api.js allows a non-global application administrator to use uploadFeedbackFile to store attacker-controlled active content while trusting the supplied MIME type. plugins/star-rating/frontend/app.js publicly serves the stored content from feedback/preview/ with the attacker-influenced Content-Type, so a global administrator who opens the preview executes the payload in the Countly origin and exposes authenticated session capabilities, including auth_token and csrf_token values. This issue is fixed in versions 24.05.50 and 25.03.44.",
  "id": "CVE-2026-44977",
  "modified": "2026-10-17T02:30:50.497220500Z",
  "published": "2026-10-16T16:04:45.868Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44977.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Countly/countly-server/commit/ae899f37bc6d70c1b44859756ce80a204ae72631"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Countly/countly-server/commit/fcb16c808c0fdb6dc99fe9c66de7fc560b3a9c41"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Countly/countly-server/releases/tag/24.05.50"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Countly/countly-server/releases/tag/25.03.44"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Countly/countly-server/security/advisories/GHSA-jqp4-p86c-phxc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44977"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "countly-server: Stored XSS in feedback upload enables app-admin to compromise global admin session context"
}