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TI-2026-40325 Aliases CVE-2026-55866GHSA-4vrg-r928-h5vv

Incorrect authorization in authzed spicedb

Priority LOW 18CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.

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 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00341 27th percentileScored 2026-11-07
Fix Fixed spicedb (authzed): 1.54.0github.com/authzed/spicedb (Go): 1.54.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
authzedspicedb1.34.1 to before 1.54.01.54.0Patch availableCNA
—github.com/authzed/spicedb (Go)1.34.0 to before 1.54.01.54.0Patch availableGHSA-4vrg-r928-h5vv
  • spicedb Vendorauthzed Affected 1.34.1 to before 1.54.0 Fixed in 1.54.0 Patch available CNA
  • github.com/authzed/spicedb (Go) Vendor— Affected 1.34.0 to before 1.54.0 Fixed in 1.54.0 Patch available GHSA-4vrg-r928-h5vv

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:authzed:spicedb:*:*:*:*:*:*:*:*——authzed
  • cpe:2.3:a:authzed:spicedb:*:*:*:*:*:*:*:* Versions — — ·authzed

Remediation

  • Fix · CNA spicedb (authzed) Fixed in 1.54.0
  • Fix · GHSA-4vrg-r928-h5vv github.com/authzed/spicedb (Go) Fixed in 1.54.0 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-55866
  2. 2026-10-03 Alias added: GHSA-4vrg-r928-h5vv

References

Other 6

  • TI-2025-31139 SpiceDB checks involving relations with caveats can result in no permission when permission is expected CVSS 3.1MEDIUM 5.3
  • TI-2023-13621 SpiceDB binding metrics port to untrusted networks and can leak command-line flags CVSS 3.1HIGH 8.7
  • TI-2024-17962 Integer overflow in chunking helper causes dispatching to miss elements or panic CVSS 3.1CRITICAL 9.1
  • TI-2022-06024 Lookup operations do not take into account wildcards in SpiceDB CVSS 3.1HIGH 8.1
  • TI-2023-24882 `SPICEDB_DATASTORE_CONN_URI` is leaked when URI cannot be parsed CVSS 3.1MEDIUM 6.5
  • TI-2026-28919 SpiceDB: SPICEDB_DATASTORE_CONN_URI is leaked on startup logs CVSS 3.1MEDIUM 6.0
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences