# CVE-2025-62523: PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton. PILOS before 4.8.0 includes a…

Source: https://junglewise.ai/threats/cve-2025-62523-pilos-platform-for-interactive-live-online-seminars-is-a-frontend  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-10-27  
License: CC BY 4.0 with a link back

CVE-2025-62523 · Severity: medium · CVSS 6.3 · Published 2025-10-27

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 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

Technologies: [Thm Pilos](https://junglewise.ai/threats/technologies/pilos). Vendors: [Thm](https://junglewise.ai/threats/vendors/thm).

## Quick answers

**Is CVE-2025-62523 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-62523 being exploited in the wild.

**How severe is CVE-2025-62523?** Medium severity, with a CVSS score of 6.3, published 27 October 2025.

**Which products and versions are affected?** Thm Pilos. The advisory does not name versions.

**Is there a fix for CVE-2025-62523?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-62523?** Check whether you run Thm Pilos. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Thm Pilos

## Related threats

- [PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton. Prior to 4.8.0, users with a…](https://junglewise.ai/threats/cve-2025-62781-pilos-platform-for-interactive-live-online-seminars-is-a-frontend)
- [PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton. PILOS before 4.8.0 exposes the…](https://junglewise.ai/threats/cve-2025-62524-pilos-platform-for-interactive-live-online-seminars-is-a-frontend)