Information Disclosure Vulnerability in Rallly by Luke Vella
CVE-2025-66027

7.1HIGH

Key Information:

Vendor

Lukevella

Status
Rallly
Vendor
CVE Published:
29 November 2025

What is CVE-2025-66027?

Rallly, the open-source scheduling and collaboration tool, is affected by an information disclosure vulnerability that allows exposure of participant details. Before version 4.5.6, this flaw enables unauthorized access to names and email addresses through specific API endpoints, even with Pro privacy features activated. This defect undermines the intended privacy measures designed to safeguard user information, highlighting the importance of promptly updating to the patched version 4.5.6 to mitigate risks.

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Deploy the Patch

Affected Version(s)

rallly < 4.5.6

References

https://github.com/lukevella/rallly/security/advisories/G...
x_refsource_CONFIRM
https://github.com/lukevella/rallly/commit/59738c04f9a8ec...
x_refsource_MISC
https://github.com/lukevella/rallly/releases/tag/v4.5.6
x_refsource_MISC

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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