Auth bypass in Avo-hq Avo
CVE-2026-55518
Avo is a framework to create admin panels for Ruby on Rails apps. Prior to 3.32.1 and 4.0.0.beta.51, Avo's association attach workflow checks attach_<association>? in the UI and GET /resources/:resource/:id/:related/new path, but the actua…
Vulnerability class: IDOR (Insecure Direct Object Reference)
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.
Affected products
- Avo-hq Avo — versions >= 4.0.0.beta.1, < 4.0.0.beta.51, < 3.32.1
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-55518?
- CVE-2026-55518 is a critical-severity vulnerability in Avo-hq Avo, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.6/10. Published 2026-07-17.
- How severe is CVE-2026-55518?
- Critical severity. CVSS v3 base score is 9.6 out of 10.