CVE-2025-49011

LOW3.7EPSS 0.19%

SpiceDB checks involving relations with caveats can result in no permission when permission is expected

Published: 6/6/2025Modified: 6/10/2025
Also known as:GHSA-cwwm-hr97-qfxmGO-2025-3744

Description

### Impact On schemas involving arrows with caveats on the arrow’ed relation, when the path to resolve a CheckPermission request involves the evaluation of multiple caveated branches, requests may return a negative response when a positive response is expected. For example, given this schema: ``` definition user {} definition office { relation parent: office relation manager: user permission read = manager + parent->read } definition group { relation parent: office permission read = parent->read } definition document { relation owner: group with equals permission read = owner->read } caveat equals(actual string, required string) { actual == required } ``` and these relationships: ``` office:headoffice#manager@user:maria office:branch1#parent@office:headoffice group:admins#parent@office:branch1 group:managers#parent@office:headoffice document:budget#owner@group:admins[equals:{"required":"admin"}] document:budget#owner@group:managers[equals:{"required":"manager"}] ``` Permission for `'document:budget#read@user:maria with {"actual" : "admin"}'` is returned as NO_PERMISSION when HAS_PERMISSION is the correct answer. ### Patches Upgrade to v1.44.2. ### Workarounds Do not use caveats in your schema over an arrow’ed relation.

Affected packages (2)

CVSS scores

SourceVersionSeverityVector
osvCVSS 3.1LOW3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

References (5)