Improper input validation in Onlook
CVE-2025-63783
A Broken Object Level Authorization (BOLA) vulnerability was discovered in the tRPC project mutation APIs (update, delete, add/remove tag) of the Onlook web application 0.2.32. The vulnerability exists because the API fails to verify the ownership or membership of the currently authenticated user for the requested project ID. An authenticated attacker can send a malicious request containing another user's project ID to unlawfully modify, delete, or manipulate tags on that project, which can severely compromise data integrity and availability.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.003 (20.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H.
Affected products
- Onlook — versions 0.2.32
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Broken Link)
- cve@mitre.org (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-63783?
- CVE-2025-63783 is a high-severity vulnerability in Onlook, classified under Improper Input Validation. CVSS score: 7.6/10. Published 2025-11-07.
- How severe is CVE-2025-63783?
- High severity. CVSS v3 base score is 7.6 out of 10.