CVE-2026-55518
Avo - Missing Authorization in Avo Association Attach Endpoint Allows Unauthorized Relationship Manipulation and Privilege Escalation
Sévérité par source
Le label propre à Trivy est CRITICAL. Critique selon GHSA, Ruby Advisory DB.
Description
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 actual write endpoint, POST /resources/:resource/:id/:related, does not run the same authorization check before mutating the association through Avo::AssociationsController#create. An authenticated low-privileged Avo user can bypass hidden or disabled attach controls and directly attach related records to a parent record by sending a crafted POST request, which can lead to privilege escalation and cross-tenant data exposure where associations represent authorization-bearing relationships. This issue is fixed in versions 3.32.1 and 4.0.0.beta.51.
Paquets affectés et versions corrigées
| Source | Paquet | Corrigé en |
|---|---|---|
| rubygems::GitHub Security Advisory RubyGems | avo | 3.32.1, 4.0.0.beta.51 |
| rubygems::Ruby Advisory Database | avo | >= 3.32.1, < 4.0.0.beta.1, >= 4.0.0.beta.51 |
Références
- https://advisories.gitlab.com/gem/avo/CVE-2026-55518
- https://github.com/advisories/GHSA-8fq9-273g-6mrg
- https://github.com/avo-hq/avo
- https://github.com/avo-hq/avo/commit/995928e586fd1788dd496bd51c4dbe4a79cb2b9c
- https://github.com/avo-hq/avo/pull/4568
- https://github.com/avo-hq/avo/releases/tag/v3.32.1
- https://github.com/avo-hq/avo/security/advisories/GHSA-8fq9-273g-6mrg
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/avo/CVE-2026-55518.yml