CVE-2024-27101 Integer overflow in chunking helper causes dispatching to miss elements or panic

What is CVE-2024-27101?

CVE-2024-27101 is a high-severity vulnerability in authzed spicedb, published on 1 Mar 2024. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-190

Which versions are affected by CVE-2024-27101?

3 open source packages ship an affected version, including github.com/authzed/spicedb. It affects 1 product.

Products include Authzed Spicedb.

How do I fix CVE-2024-27101?

Upgrade github.com/authzed/spicedb to 1.29.2 or later.

Is CVE-2024-27101 being exploited?

There is no known exploitation of CVE-2024-27101 in the wild and no public exploit code.

Other vulnerabilities in authzed spicedb

• CVE-2023-29193 SpiceDB binding metrics port to untrusted networks and can leak command-line flags High 8.7
• CVE-2022-21646 Lookup operations do not take into account wildcards in SpiceDB High 8.1
• CVE-2026-40091 SpiceDB: SPICEDB_DATASTORE_CONN_URI is leaked on startup logs Medium 6.0
• CVE-2023-46255 `SPICEDB_DATASTORE_CONN_URI` is leaked when URI cannot be parsed Medium 4.2
• CVE-2025-49011 SpiceDB checks involving relations with caveats can result in no permission when permission is expected Low 3.7

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-h3m7-rqc4-7h9p, GO-2024-2597.