Vulnerability · Published Nov 19, 2025 · Assigned by GitHub_M

CVE-2025-65032Rallly Has an IDOR Vulnerability in Participant Rename Function Allows Unauthorized Modification of Other Users’ Names

Medium 6.5

In plain English

A medium-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 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 80.0% 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 change the display names of other participants in polls without being an admin or the poll owner. By manipulating the participantId parameter in a rename request, an attacker can modify another user’s name, violating data integrity and potentially causing confusion or impersonation attacks. This issue has been patched in version 4.5.4.

Affected products (as reported)

Vendor	Product	Versions
lukevella	rallly	< 4.5.4

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

References

https://github.com/lukevella/rallly/security/advisories/GHSA-q9m7-chfx-43xw x_refsource_CONFIRM
https://github.com/lukevella/rallly/releases/tag/v4.5.4 x_refsource_MISC