{"id":"CVE-2025-62523","title":"PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton","summary":"PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton. PILOS before 4.8.0 includes a Cross-Origin Resource Sharing (CORS) misconfiguration in its middleware: it reflects the Origin request header back in t…","severity":"medium","cvss":6.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","cwe":["CWE-942"],"vendor":"thm","product":"pilos","affected":["pilos < 4.8.0"],"patched":["pilos 4.8.0"],"published":"2025-10-27","updated":"2026-10-08","sourceUpdated":"2026-10-08T11:10:00.250","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-62523","references":[{"url":"https://github.com/THM-Health/PILOS/commit/14655bc4f8128ffd2b3c25004b01d9a802808da8","label":"security-advisories@github.com"},{"url":"https://github.com/THM-Health/PILOS/security/advisories/GHSA-pgfw-f4mp-5445","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00204,"epssPercentile":0.0946,"ingestedAt":"2026-10-08T11:31:27.649Z","slug":"CVE-2025-62523","body":"## Overview\n\nPILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton. PILOS before 4.8.0 includes a Cross-Origin Resource Sharing (CORS) misconfiguration in its middleware: it reflects the Origin request header back in the Access-Control-Allow-Origin response header without proper validation or a whitelist, while Access-Control-Allow-Credentials is set to true. This behavior could allow a malicious website on a different origin to send requests (including credentials) to the PILOS API. This may enable exfiltration or actions using the victim’s credentials if the server accepts those cross-origin requests as authenticated. Laravel’s session handling applies additional origin checks such that cross-origin requests are not authenticated by default. Because of these session-origin protections, and in the absence of any other unknown vulnerabilities that would bypass Laravel’s origin/session checks, this reflected-Origin CORS misconfiguration is not believed to be exploitable in typical PILOS deployments. This vulnerability has been patched in PILOS in v4.8.0\n\n## Affected\n\n- `pilos < 4.8.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `pilos 4.8.0`","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":34.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}