{"id":"CVE-2026-44977","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-44977","generatedAt":"2026-10-28T04:13:36.945Z","title":"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…","description":"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.","published":"2026-10-16T16:17:44.000Z","lastModified":"2026-10-21T03:17:19.000Z","status":"Awaiting Analysis","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":9,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"},"cwe":["CWE-79"],"affected":[],"epss":{"score":0.00436,"percentile":0.37684,"date":"2026-10-27","history":[{"date":"2026-10-17","score":0.00343,"percentile":0.26284}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.44%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-16T16:17:44.000Z","detail":{"score":"9.0","severity":"CRITICAL","publishedAt":"2026-10-16T16:17:44.483Z"},"summary":"New CVE, critical severity (CVSS 9.0)."}],"references":[{"url":"https://github.com/Countly/countly-server/commit/ae899f37bc6d70c1b44859756ce80a204ae72631","source":"security-advisories@github.com"},{"url":"https://github.com/Countly/countly-server/commit/fcb16c808c0fdb6dc99fe9c66de7fc560b3a9c41","source":"security-advisories@github.com"},{"url":"https://github.com/Countly/countly-server/releases/tag/24.05.50","source":"security-advisories@github.com"},{"url":"https://github.com/Countly/countly-server/releases/tag/25.03.44","source":"security-advisories@github.com"},{"url":"https://github.com/Countly/countly-server/security/advisories/GHSA-jqp4-p86c-phxc","source":"security-advisories@github.com"},{"url":"https://github.com/Countly/countly-server/security/advisories/GHSA-jqp4-p86c-phxc","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-44977","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}