What is CVE-2025-65021?

CVE-2025-65021 is a critical-severity vulnerability in Lukevella Rallly, classified under Improper Authorization. CVSS score: 9.1/10. Published 2025-11-19.

How severe is CVE-2025-65021?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Lukevella Rallly

CVE-2025-65021

Rallly is an open-source scheduling and collaboration tool. Prior to version 4.5.4, an Insecure Direct Object Reference (IDOR) vulnerability exists in the poll finalization feature of the application. Any authenticated user can finalize a poll they do not own by manipulating the pollId parameter in the request. This allows unauthorized users to finalize other users’ polls and convert them into events without proper authorization checks, potentially disrupting user workflows and causing data integrity and availability issues. This issue has been patched in version 4.5.4.

Published 2025-11-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Lukevella Rallly — versions < 4.5.4
Rallly

Weakness classification (CWE)

References

github.com/lukevella/rallly/security/advisories/GHSA-x7w2-g548-4qg8 (Exploit, Vendor Advisory)
github.com/lukevella/rallly/releases/tag/v4.5.4 (Release Notes)

Frequently asked questions

What is CVE-2025-65021?: CVE-2025-65021 is a critical-severity vulnerability in Lukevella Rallly, classified under Improper Authorization. CVSS score: 9.1/10. Published 2025-11-19.
How severe is CVE-2025-65021?: Critical severity. CVSS v3 base score is 9.1 out of 10.