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TI-2025-39919 Aliases CVE-2025-64529GHSA-pm3x-jrhh-qcr7

SpiceDB's WriteRelationships fails silently if payload is too big

Priority LOW 19CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.

Summary

SpiceDB is an open source database system for creating and managing security-critical application permissions. In versions prior to 1.45.2, users who use the exclusion operator somewhere in their authorization schema; have configured their SpiceDB server such that `--write-relationships-max-updates-per-call` is bigger than 6500; and issue calls to WriteRelationships with a large enough number of updates that cause the payload to be bigger than what their datastore allows; will receive a successful response from their `WriteRelationships` call, when in reality that call failed, and receive incorrect permission check results, if those relationships had to be read to resolve the relation involving the exclusion. Version 1.45.2 contains a patch for the issue. As a workaround, set `--write-relationships-max-updates-per-call` to `1000`.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00264 18th percentileScored 2026-11-07
Fix Fixed spicedb (authzed): 1.45.2github.com/authzed/spicedb (Go): 1.45.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
authzedspicedbbefore 1.45.21.45.2Patch availableCNA
—github.com/authzed/spicedb (Go)before 1.45.21.45.2Patch availableGHSA-pm3x-jrhh-qcr7
  • spicedb Vendorauthzed Affected before 1.45.2 Fixed in 1.45.2 Patch available CNA
  • github.com/authzed/spicedb (Go) Vendor— Affected before 1.45.2 Fixed in 1.45.2 Patch available GHSA-pm3x-jrhh-qcr7

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:authzed:spicedb:*:*:*:*:*:*:*:*before 1.45.2Vulnerableauthzed
  • cpe:2.3:a:authzed:spicedb:*:*:*:*:*:*:*:* Versions before 1.45.2 Vulnerable ·authzed

Remediation

  • Fix · CNA spicedb (authzed) Fixed in 1.45.2
  • Fix · GHSA-pm3x-jrhh-qcr7 github.com/authzed/spicedb (Go) Fixed in 1.45.2 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-2025-64529
  2. 2026-10-03 Alias added: GHSA-pm3x-jrhh-qcr7

References

Patch 1

Advisory 1

Other 2

  • 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 12 →

Sources

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