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.
EPSS: 0.002 (16.1th percentile) — read the EPSS interpretation.
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.
Affected products
- Lukevella Rallly — versions < 4.5.4
- Rallly
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)
- security-advisories@github.com (x_refsource_MISC, 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.