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CVE-2025-66027

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Date: November 28, 2025

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.

Severity Score

Related Resources (5)

https://github.com/lukevella/rallly/security/advisories/GHSA-65wg-8xgw-f3fg
https://nvd.nist.gov/vuln/detail/CVE-2025-66027
https://github.com/lukevella/rallly/releases/tag/v4.5.6
https://github.com/lukevella/rallly/commit/59738c04f9a8ec25f0af5ce20ad0eab6cf134963
https://www.mend.io/vulnerability-database/CVE-2025-66027

Severity Score

Weakness Type (CWE)

Improper Access Control

CWE-284

Exposure of Sensitive Information to an Unauthorized Actor

CWE-200

Exposure of Private Personal Information to an Unauthorized Actor

CWE-359

Top Fix

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Upgrade Version

Upgrade to version https://github.com/lukevella/rallly.git - v4.5.6

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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