{"items":[{"id":"NVI-00017797","kind":"vulnerability","title":"SpiceDB: Checks involving relations with caveats can result in unconditional permission when conditional permission is expected","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4vrg-r928-h5vv","CVE-2026-55866"],"plain_summary":"GitHub lists this reviewed advisory for github.com/authzed/spicedb. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-683fe641d57a17703aa1c98855ec7237"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-06-23T17:17:14.000Z","value":"3.7 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-683fe641d57a17703aa1c98855ec7237"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-683fe641d57a17703aa1c98855ec7237","url":"https://github.com/advisories/GHSA-4vrg-r928-h5vv","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-4vrg-r928-h5vv","publisher":"GitHub Advisory Database","observed_at":"2026-11-05T19:06:16.668Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-683fe641d57a17703aa1c98855ec7237"],"technology":"github.com/authzed/spicedb","known_exclusions":[],"conditions_summary":"### Impact\n Under concurrency, `CheckPermission` and `CheckBulkPermissions` can return `PERMISSIONSHIP_HAS_PERMISSION` for a (resource, permission, subject) whose correct answer is   `PERMISSIONSHIP_CONDITIONAL_PERMISSION`. \n\n You are impacted if **all** of the following hold:\n\n  1. Your schema has a permission combining relations with an intersection or exclusion, where a subject reaches it through a caveated branch and a non-caveated branch. For example:\n\n```zed\n  definition user {}\n\n  caveat some_caveat(somecondition int) { somecondition == 42 }\n\n  definition document {\n    relation reader: user | user with some_caveat\n    relation writer: user\n    relation banned: user\n    permission has_permission = (reader & writer) - banned\n  }\n```\n\n  2. A subject reaches the permission via the caveated edge:\n\n```\n  document:firstdoc#reader@user:caveatedreader[some_caveat]\n  document:firstdoc#writer@user:caveatedreader\n```\n  3. Your workload issues `LookupResources` with a `context` request parameter, concurrently with `CheckPermission/CheckBulkPermissions` for the same subject/resource, and\n  4. The dispatch result cache is enabled.\n  \nWhen all of the above are true, there is an intermitten","public_affected_ranges":[">= 1.34.0, < 1.54.0"]}],"null_published_at":"2026-11-05T19:10:21.469Z","source_updated_at":"2026-06-23T17:17:14.000Z","source_disclosed_at":"2026-06-19T21:42:12.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-05T19:06:16.668Z"}],"next_cursor":null,"snapshot_revision":"42594"}