Vulnerability · Published Nov 19, 2025 · Assigned by GitHub_M

CVE-2025-65029Rallly Has an IDOR Vulnerability in Participant Deletion Endpoint Allows Unauthorized Removal of Poll Participants

High 8.1

In plain English

A high-severity authorization bypass via user-controlled key in rallly from lukevella. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)0.4%top 70.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Rallly is an open-source scheduling and collaboration tool. Prior to version 4.5.4, an insecure direct object reference (IDOR) vulnerability allows any authenticated user to delete arbitrary participants from polls without ownership verification. The endpoint relies solely on a participant ID to authorize deletions, enabling attackers to remove other users (including poll owners) from polls. This impacts the integrity and availability of poll participation data. This issue has been patched in version 4.5.4.

Affected products (as reported)

Vendor	Product	Versions
lukevella	rallly	< 4.5.4

Weakness: CWE-285, CWE-639, CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

References

https://github.com/lukevella/rallly/security/advisories/GHSA-f8jc-6746-ww95 x_refsource_CONFIRM
https://github.com/lukevella/rallly/releases/tag/v4.5.4 x_refsource_MISC