CVE-2024-27101
Integer overflow in chunking helper causes dispatching to miss elements or panic
SpiceDB is an open source, Google Zanzibar-inspired database for creating and managing security-critical application permissions. Integer overflow in chunking helper causes dispatching to miss elements or panic. Any SpiceDB cluster with any schema where a resource being checked has more than 65535 relationships for the same resource and subject type is affected by this problem. The CheckPermission, BulkCheckPermission, and LookupSubjects API methods are affected. This vulnerability is fixed in 1.29.2.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Integer overflow in chunking helper causes dispatching to miss elements or panic
SpiceDB is an open source, Google Zanzibar-inspired database for creating and managing security-critical application permissions. Integer overflow in chunking helper causes dispatching to miss elements or panic. Any SpiceDB cluster with any schema where a resource being checked has more than 65535 relationships for the same resource and subject type is affected by this problem. The CheckPermission, BulkCheckPermission, and LookupSubjects API methods are affected. This vulnerability is fixed in 1.29.2.
- Record
CVE-2024-27101- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
EUVDEUVD-2024-0930
SpiceDB is an open source, Google Zanzibar-inspired database for creating and managing security-critical application permissions. Integer overflow in chunking helper causes dispatching to miss elements or panic. Any SpiceDB cluster with any schema where a resource being checked has more than 65535 relationships for the same resource and subject type is affected by this problem. The CheckPermission, BulkCheckPermission, and LookupSubjects API methods are affected. This vulnerability is fixed in 1.29.2.
- Record
EUVD-2024-0930- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-h3m7-rqc4-7h9p
Integer overflow in chunking helper causes dispatching to miss elements or panic
Any SpiceDB cluster with any schema where a resource being checked has more than 65535 relationships for the same resource and subject type is affected by this problem.
The issue may also lead to a panic rendering the server unavailable
The following API methods are affected:
Impact
Permission checks that are expected to be allowed are instead denied, and lookup subjects will return fewer subjects than expected.
Workarounds
There is no workaround other than making sure that the SpiceDB cluster does not have very wide relations, with the maximum value being the maximum value of an 16-bit unsigned integer
Remediations
- AuthZed Dedicated customers: No action. AuthZed has upgraded all deployments.
- AuthZed Serverless customers: No Action. AuthZed has upgraded all deployments.
- AuthZed Enterprise customers: Upgrade to v1.29.2-hotfix-enterprise.v1.hotfix.v1
- Open Source users: Upgrade to v1.29.2
- Record
GHSA-h3m7-rqc4-7h9p- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
NVD
SpiceDB is an open source, Google Zanzibar-inspired database for creating and managing security-critical application permissions. Integer overflow in chunking helper causes dispatching to miss elements or panic. Any SpiceDB cluster with any schema where a resource being checked has more than 65535 relationships for the same resource and subject type is affected by this problem. The CheckPermission, BulkCheckPermission, and LookupSubjects API methods are affected. This vulnerability is fixed in 1.29.2.
- Record
CVE-2024-27101- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:H - CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
OSV
Integer overflow in chunking helper causes dispatching to miss elements or panic
SpiceDB is an open source, Google Zanzibar-inspired database for creating and managing security-critical application permissions. Integer overflow in chunking helper causes dispatching to miss elements or panic. Any SpiceDB cluster with any schema where a resource being checked has more than 65535 relationships for the same resource and subject type is affected by this problem. The CheckPermission, BulkCheckPermission, and LookupSubjects API methods are affected. This vulnerability is fixed in 1.29.2.
- Record
CVE-2024-27101- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
OSVGHSA-h3m7-rqc4-7h9p
Integer overflow in chunking helper causes dispatching to miss elements or panic
Any SpiceDB cluster with any schema where a resource being checked has more than 65535 relationships for the same resource and subject type is affected by this problem.
The issue may also lead to a panic rendering the server unavailable
The following API methods are affected:
Impact
Permission checks that are expected to be allowed are instead denied, and lookup subjects will return fewer subjects than expected.
Workarounds
There is no workaround other than making sure that the SpiceDB cluster does not have very wide relations, with the maximum value being the maximum value of an 16-bit unsigned integer
Remediations
- AuthZed Dedicated customers: No action. AuthZed has upgraded all deployments.
- AuthZed Serverless customers: No Action. AuthZed has upgraded all deployments.
- AuthZed Enterprise customers: Upgrade to v1.29.2-hotfix-enterprise.v1.hotfix.v1
- Open Source users: Upgrade to v1.29.2
- Record
GHSA-h3m7-rqc4-7h9p- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
OSVGO-2024-2597 No score
Integer overflow in chunking helper causes dispatching to miss elements or panic in github.com/authzed/spicedb
Integer overflow in chunking helper causes dispatching to miss elements or panic in github.com/authzed/spicedb
- Record
GO-2024-2597- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/authzed/spicedbGo |
before 1.29.2 | 1.29.2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-27101 is a high vulnerability (CVSS 7.3) in Authzed Spicedb, published March 1, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 39th percentile. Fixed in github.com/authzed/spicedb 1.29.2.
References
github.com/authzed/spicedb/security/advisories/GHSA-h3m7-rqc4-7h9p
nvd.nist.gov/vuln/detail/CVE-2024-27101