Auth bypass in Lukevella Rallly
CVE-2025-65031
Rallly is an open-source scheduling and collaboration tool. Prior to version 4.5.4, an improper authorization flaw in the comment creation endpoint allows authenticated users to impersonate any other user by altering the authorName field in the API request. This enables attackers to post comments under arbitrary usernames, including privileged ones such as administrators, potentially misleading other users and enabling phishing or social engineering attacks. This issue has been patched in version 4.5.4.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (15.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Lukevella Rallly — versions < 4.5.4
- Rallly
Weakness classification (CWE)
References
- github.com/lukevella/rallly/security/advisories/GHSA-hhfc-6gq7-rrpm (Exploit, Third Party Advisory)
- github.com/lukevella/rallly/releases/tag/v4.5.4 (Release Notes)
Frequently asked questions
- What is CVE-2025-65031?
- CVE-2025-65031 is a medium-severity vulnerability in Lukevella Rallly, classified under Improper Authorization. CVSS score: 6.5/10. Published 2025-11-19.
- How severe is CVE-2025-65031?
- Medium severity. CVSS v3 base score is 6.5 out of 10.