CVE-2025-66027: Rallly is an open-source scheduling and collaboration tool. Prior to version 4.5.6, an information disclosure…
CVE-2025-66027 · Severity: medium · CVSS 6.5 · Published 2025-11-29
Rallly is an open-source scheduling and collaboration tool. Prior to version 4.5.6, an information disclosure vulnerability exposes participant details, including names and email addresses through the /api/trpc/polls.get,polls.participants.list endpoint, even when Pro privacy features are enabled. This bypasses intended privacy controls that should prevent participants from viewing other users’ personal information. This issue has been patched in version 4.5.6.
No. Junglewise Threat Intelligence has no report of CVE-2025-66027 being exploited in the wild.
How severe is CVE-2025-66027?
Medium severity, with a CVSS score of 6.5, published 29 November 2025.
Which products and versions are affected?
Rallly. The advisory does not name versions.
Is there a fix for CVE-2025-66027?
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-2025-66027?
Check whether you run Rallly. 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.