---
id: CVE-2026-55866
title: >-
  SpiceDB is an open source database system for creating and managing
  security-critical application permissions
summary: >-
  SpiceDB is an open source database system for creating and managing
  security-critical application permissions. From 1.34.0 until 1.54.0, SpiceDB
  can return PERMISSIONSHIP_HAS_PERMISSION instead of
  PERMISSIONSHIP_CONDITIONAL_PERMISSION or…
severity: low
cvss: 3.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-863
vendor: authzed
product: spicedb
affected:
  - 'spicedb >= 1.34.1, < 1.54.0'
patched:
  - github.com/authzed/spicedb 1.54.0
published: '2026-09-14'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T19:17:33.193'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-55866'
references:
  - url: >-
      https://github.com/authzed/spicedb/commit/44a1c9f266bd8a884bfebfc27181210302541b9b
    label: security-advisories@github.com
  - url: >-
      https://github.com/authzed/spicedb/commit/ccde792fc48750740d025d4286d5c2c88614cd30
    label: security-advisories@github.com
  - url: 'https://github.com/authzed/spicedb/pull/3188'
    label: security-advisories@github.com
  - url: 'https://github.com/authzed/spicedb/releases/tag/v1.54.0'
    label: security-advisories@github.com
  - url: 'https://github.com/authzed/spicedb/security/advisories/GHSA-4vrg-r928-h5vv'
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-4vrg-r928-h5vv'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-55866.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-55866'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-55866'
tags:
  - nvd
  - cve.org
  - ghsa
  - go
  - csaf
  - vex
  - red-hat
ecosystem: go
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T18:15:32.043031Z'
ingestedAt: '2026-06-22T13:35:24.278Z'
epss: 0.00341
epssPercentile: 0.24847
---

## Overview

SpiceDB is an open source database system for creating and managing security-critical application permissions. From 1.34.0 until 1.54.0, SpiceDB can return PERMISSIONSHIP_HAS_PERMISSION instead of PERMISSIONSHIP_CONDITIONAL_PERMISSION or PERMISSIONSHIP_NO_PERMISSION because checkRequestToKey() and checkRequestToKeyWithCanonical() in internal/dispatch/keys/computed.go omit CheckHints when constructing dispatch Check cache keys. The incorrect result requires a permission combining relations with intersection or exclusion, a subject reachable through caveated and non-caveated branches, LookupResources with a context parameter running concurrently with CheckPermission or CheckBulkPermissions for the same resource and subject, and an enabled dispatch result cache. Under these conditions, a result computed for one hint set can poison the cache entry used by a semantically different authorization check, allowing permission without satisfying the caveat. This issue is fixed in version 1.54.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-55866)

Affected packages:

- `github.com/authzed/spicedb >= 1.34.0, < 1.54.0`

Patched in:

- `github.com/authzed/spicedb 1.54.0`

Source: https://github.com/advisories/GHSA-4vrg-r928-h5vv

## Vendor advisories

- **Red Hat VEX** · updated 2026-09-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-55866.json)