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.
{
"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"
}{
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "24.05.50"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"introduced": "25.03"
},
{
"fixed": "25.03.44"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "ae899f37bc6d70c1b44859756ce80a204ae72631"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "fcb16c808c0fdb6dc99fe9c66de7fc560b3a9c41"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "24.05.50",
"range": [
{
"fixed": "e702a104d7616b1a96458da9fbf36144c5dd5ef4"
}
],
"source": "REFERENCES_TAG"
},
{
"original_tag": "25.03.44",
"range": [
{
"fixed": "6050a3b1bcb0376701dbf68e346ac261363f5dfa"
}
],
"source": "REFERENCES_TAG"
}
]
}