High
Avo: Broken Access Control: Unauthorized Execution of Arbitrary Action Classes Across Resources
Type: advisorySources: OSV
Avo is a framework to create admin panels for Ruby on Rails apps. Prior to version 3.31.2, a broken access control vulnerability was identified in the ActionsController of the Avo framework. Due to insecure action lookup logic, an authenticated user can execute any Action class (descendants of Avo::BaseAction) on any resource, even if the action is not registered for that specific resource. This leads to Privilege Escalation and unauthorized data manipulation across the entire application. This issue has been patched in version 3.31.2.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-42205
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 16:55 UTC · Revision 1
Source evidence
Avo: Broken Access Control: Unauthorized Execution of Arbitrary Action Classes Across Resources
core-osv · Original sourcePublished 8 May 2026, 21:26 UTC
Avo is a framework to create admin panels for Ruby on Rails apps. Prior to version 3.31.2, a broken access control vulnerability was identified in the ActionsController of the Avo framework. Due to insecure action lookup logic, an authenticated user can execute any Action class (descendants of Avo::BaseAction) on any resource, even if the action is not registered for that specific resource. This leads to Privilege Escalation and unauthorized data manipulation across the entire application. This issue has been patched in version 3.31.2.
osv:CVE-2026-42205
Complete source record
{
"id": "ede216e65b1cf7597d49a80a33ca5072316c2c74a65db6dfbacfedd46983957b",
"url": "https://osv.dev/vulnerability/CVE-2026-42205",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Avo: Broken Access Control: Unauthorized Execution of Arbitrary Action Classes Across Resources",
"summary": "Avo is a framework to create admin panels for Ruby on Rails apps. Prior to version 3.31.2, a broken access control vulnerability was identified in the ActionsController of the Avo framework. Due to insecure action lookup logic, an authenticated user can execute any Action class (descendants of Avo::BaseAction) on any resource, even if the action is not registered for that specific resource. This leads to Privilege Escalation and unauthorized data manipulation across the entire application. This issue has been patched in version 3.31.2.",
"evidence": "osv:CVE-2026-42205",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-42205",
"aliases": [
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"GHSA-qc5p-3mg5-9fh8"
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}
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"affected": [
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],
"modified": "2026-10-28T02:30:30.618805929Z",
"provider": "osv",
"references": [
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"evidence": "/id"
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},
"source_id": "core-osv",
"document_id": 497623,
"published_at": "2026-05-08T21:26:44.743+00:00"
}