CVE-2026-69197
Description
Umbraco is an ASP.NET CMS. Prior to 13.15.1, 17.5.3, and 18.0.2, the Content Delivery API applies member and Public Access checks to the directly requested node but not to referenced nodes serialized through Content Picker or Multi-Node Tree Picker properties, including pickers nested in Block List, Block Grid, or Rich Text Editor blocks. When DeliveryApi:PublicAccess is enabled, an anonymous caller can retrieve a protected node's name, route, and id through an unprotected referencing node and use ?expand to retrieve full property values. When the Delivery API is instead gated by the organization-wide API key, a key holder can still bypass per-node Public Access through the same expansion path. The same RequestContextOutputExpansionStrategyV2 and ElementOnlyOutputExpansionStrategy path also bypasses allowed or disallowed content-type alias restrictions for referenced content. Direct requests for the protected node still return 401, and no integrity or availability impact is established. This issue is fixed in versions 13.15.1, 17.5.3, and 18.0.2.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| NuGet | Umbraco.Cms | >=12.0.0,<13.15.1 | 13.15.1 |
| NuGet | Umbraco.Cms | >=14.0.0-rc1,<17.5.3 | 17.5.3 |
| NuGet | Umbraco.Cms | >=18.0.0,<18.0.2 | 18.0.2 |
References
- https://github.com/umbraco/Umbraco-CMS/commit/26312a3f717a0f33bb3d7d28b14bef3592bdb0fe
- https://github.com/umbraco/Umbraco-CMS/commit/5360e2a9681ce2d0024be374e80339260bcc2511
- https://github.com/umbraco/Umbraco-CMS/commit/a9649da4e5a0786db7688bd6b5036a21df26b015
- https://github.com/umbraco/Umbraco-CMS/releases/tag/release-13.15.1
- https://github.com/umbraco/Umbraco-CMS/releases/tag/release-17.5.3
- https://github.com/umbraco/Umbraco-CMS/releases/tag/release-18.0.2
- https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-wr57-hqmp-fgvh
- https://github.com/umbraco/Umbraco-CMS
CWEs
CWE-200 CWE-862
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.