SpiceDB WriteRelationships fails silently if payload is too big
### Impact Users who 1. use the exclusion operator somewhere in their authorization schema 1. have configured their SpiceDB server such that `--write-relationships-max-updates-per-call` is bigger than 6500 1. issue calls to WriteRelationships with a large enough number of updates that cause the payload to be bigger than what their datastore allows will 1. receive a successful response from their `WriteRelationships` call, when in reality that call failed, 2. receive incorrect permission check results, if those relationships had to be read to resolve the relation involving the exclusion ### Patches Upgrade to v.145.2. ### Workarounds Set `--write-relationships-max-updates-per-call` to `1000`.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-64529US | medium6.5 | — | ||
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 som… | ||||
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