CVE-2026-40091: Github.com/authzed/spicedb SpiceDB's SPICEDB_DATASTORE_CONN_URI Is Leaked On Vulnerability

MODERATE
Advisory Identifier: GHSA-jf4f-rr2c-9m58
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CVSS 6.0
CWE-532
Published
Advisory Summary

CVE-2026-40091 is a MODERATE (CVSS 6.0) spicedb's spicedb_datastore_conn_uri is leaked on vulnerability (CWE-532: Insertion of Sensitive Information into Log File) affecting Github.com/authzed/spicedb libraries in the Go ecosystem. The issue involves spicedb's spicedb_datastore_conn_uri is leaked on startup logs. Remediation is available by upgrading affected packages to version 1.51.1.

CVE-2026-40091 at a Glance

CVE Identifier CVE-2026-40091
GHSA Identifier GHSA-jf4f-rr2c-9m58
Severity MODERATE
CVSS v3.1 Base Score 6.0
CWE Classification CWE-532: Insertion of Sensitive Information into Log File
Affected Product Github.com/authzed/spicedb
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 6.0

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-40091

To remediate this vulnerability, upgrade all affected Github.com/authzed/spicedb dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/authzed/spicedb fixed: 1.51.1 
Upgrade github.com/authzed/spicedb to 1.51.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/authzed/spicedb

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-40091, inspect your project dependencies for Github.com/authzed/spicedb:

inspect dependencies for github.com/authzed/spicedb

Analyze the terminal output to locate any version of Github.com/authzed/spicedb in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.51.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-532: Insertion of Sensitive Information into Log File, where the product writes sensitive information to a log file. In Github.com/authzed/spicedb, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact When SpiceDB starts with log level `info`, the startup `"configuration"` log will include the full datastore DSN, including the plaintext password, inside `DatastoreConfig.URI`. ### Patches v1.51.1 ### Workarounds Change the log level to `warn` or `error`.

CVE-2026-40091 Affected Github.com/authzed/spicedb Versions

1 component(s)
Fixed Versions:
1.51.1
Product / Package Ecosystem Affected Versions Fixed Version
github.com/authzed/spicedb
golang/github.com/authzed/spicedb
Go
≥ 1.49.0
< 1.51.1
1.51.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/authzed/spicedb/security/advisories/GHSA-jf4f-rr2c-9m58
NVD — CVE-2026-40091 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-40091
Github.com/authzed/spicedb Source Repository REPOSITORY
https://github.com/authzed/spicedb
Github.com/authzed/spicedb Release RELEASE
https://github.com/authzed/spicedb/releases/tag/v1.51.1

Frequently Asked Questions

What is CVE-2026-40091?
CVE-2026-40091 is a security vulnerability in Github.com/authzed/spicedb involving SpiceDB's SPICEDB_DATASTORE_CONN_URI is leaked on startup logs under CWE-532: Insertion of Sensitive Information into Log File.
Which Github.com/authzed/spicedb versions are affected?
Affected versions include releases prior to 1.51.1 across affected packages: github.com/authzed/spicedb.
What version fixes CVE-2026-40091?
Upgrading to 1.51.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/authzed/spicedb affected?
Yes, github.com/authzed/spicedb is affected in releases prior to 1.51.1. Upgrade your dependency to 1.51.1 or later.
What is the CVSS score of CVE-2026-40091?
CVE-2026-40091 has a CVSS v3.1 base score of 6.0 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N.
What CWE is associated with CVE-2026-40091?
CVE-2026-40091 is classified under CWE-532: Insertion of Sensitive Information into Log File (The product writes sensitive information to a log file.).
How can I check Go dependencies for CVE-2026-40091?
Run the dependency tree command: 'inspect dependencies for github.com/authzed/spicedb'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-jf4f-rr2c-9m58",
  "modified" : "2026-05-14T20:51:27Z",
  "published" : "2026-04-14T22:33:06Z",
  "aliases" : [ "CVE-2026-40091" ],
  "summary" : "SpiceDB's SPICEDB_DATASTORE_CONN_URI is leaked on startup logs",
  "details" : "### Impact\nWhen SpiceDB starts with log level `info`, the startup `\"configuration\"` log will include the full datastore DSN, including the plaintext password, inside `DatastoreConfig.URI`.\n\n### Patches\nv1.51.1\n\n### Workarounds\nChange the log level to `warn` or `error`.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/authzed/spicedb"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.49.0"
      }, {
        "fixed" : "1.51.1"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.51.0"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/authzed/spicedb/security/advisories/GHSA-jf4f-rr2c-9m58"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-40091"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/authzed/spicedb"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/authzed/spicedb/releases/tag/v1.51.1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-532" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-14T22:33:06Z",
    "nvd_published_at" : "2026-04-15T04:17:46Z"
  }
}