CVE-2026-55518
Avo - Missing Authorization in Avo Association Attach Endpoint Allows Unauthorized Relationship Manipulation and Privilege Escalation
Einstufung nach Quelle
Trivys eigenes Label ist CRITICAL. Kritisch laut GHSA, Ruby Advisory DB.
Beschreibung
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.
Betroffene Pakete und behobene Versionen
| Quelle | Paket | Behoben in |
|---|---|---|
| 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 |
Referenzen
- 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