CVE-2025-66027: rallly Information Disclosure — Exploit

Description

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.

Is your site exposed to CVE-2025-66027?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness Type (CWE)

CWE-200 CWE-200

CWE-284 CWE-284

CWE-359 CWE-359

Affected Products

Vendor	Product	Versions
rallly	rallly	< 4.5.6

References

Advisories & Patches

https://github.com/lukevella/rallly/commit/59738c04f9a8ec25f0af5ce20ad0eab6cf134963 https://github.com/lukevella/rallly/security/advisories/GHSA-65wg-8xgw-f3fg https://github.com/lukevella/rallly/security/advisories/GHSA-65wg-8xgw-f3fg

Exploits

https://github.com/lukevella/rallly/security/advisories/GHSA-65wg-8xgw-f3fg https://github.com/lukevella/rallly/security/advisories/GHSA-65wg-8xgw-f3fg

Other References

https://github.com/lukevella/rallly/releases/tag/v4.5.6

Frequently Asked Questions

What is CVE-2025-66027? +

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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-66027? +

CVE-2025-66027 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-66027? +

CVE-2025-66027 affects products from rallly, specifically: rallly. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-66027? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-15625

Unauthenticated user is able to execute arbitrary SQL commands in Sparx Pro Cloud Server database in certain cases.

CVE-2026-22051

StorageGRID (formerly StorageGRID Webscale) versions prior to 11.9.0.13 and 12.0.0.6 are susceptible to a Information Disclosure vulnerability. Successful exploit could …

CVE-2026-54396

An information disclosure vulnerability exists in the MISP AuthKey edit functionality. When a validation error occurs during an AuthKey edit …

CVE-2026-13230

An information disclosure vulnerability was identified in TP-Link Kasa EC70 v4 and EC71 v4 in the local discovery mechanism, which …

CVE-2026-53912

Cerebrate before version 1.37 exposed credential material from self-registration requests. The self-registration workflow stored the registrant’s hashed password in the …

CVE-2026-47177

Quest Bot is an opensource modern Discord Bot built for moderation, utilities and support. Prior to version 1.0.4, a user …

CVE-2025-66027