Skip to main content

Boteraser | Website and Server Security Solutions

🛡️ CVE-2026-46668 — spicedb

🟢 CVSS 2.0 — Low ✅ No Known Exploit CWE-285 NVD
2.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

SpiceDB: Caveat structures with nested lists can result in improper cache reuse

Impact

Users are impacted if:

  • They have a caveat structure with a nested list, e.g.:

```zed

caveat shape(x list<any>) {

x == [["a"], "b"]

}

```

  • Their system exercises that caveat with either [CheckBulkPermission](https://buf.build/authzed/api/docs/main%3Aauthzed.api.v1#authzed.api.v1.PermissionsService.CheckBulkPermissions) or else [LookupResources](https://buf.build/authzed/api/docs/main%3Aauthzed.api.v1#authzed.api.v1.PermissionsService.LookupResources) running with the --experimental-lookup-resources-version flag set to lr3, implying they are using the experimental version 3 of LookupResources
  • An attacker can cause the system to craft a request to SpiceDB where either:

1. It's a CheckBulk request where there are two check items that are identical except for their combined caveat context, and one of the caveat contexts evaluates positively and the other evaluates negatively

2. It's a LookupResources request where two resources have the same evaluation contents except for their caveat context, and one would evaluate positively and the other would evaluate negatively

If all of the above are true, it would be possible for SpiceDB to erroneously return that a user has access to a resource that they do not have access to.

Patches

This problem was addressed in https://github.com/authzed/spicedb/pull/3065 and released in version v1.52.0.

Workarounds

If using v3 of LookupResources, turn the flag off.

If possible, refactor the caveat declaration structure so that it does not operate on a list of lists, but rather any other composite structure.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. Rated impact: confidentiality low, integrity none, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
  • Attack requirements: Present — the target has to be in a particular state for the attack to work.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
  • Integrity impact: None.
  • Availability impact: None.

Weakness class

CVE-2026-46668 is classified as CWE-285: Improper Authorization. A request is carried out without confirming that the caller is permitted to perform it on that specific resource.

Affected software

CVE-2026-46668 is recorded against 2 packages.

  • github.com/authzed/spicedb
  • unknown

Timeline and source

Published on 25 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com (Advisory)
nvd.nist.gov (Advisory)
github.com (Fix)
github.com (Web)

Other advisories for this package

github.com/authzed/spicedb has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-285: Improper Authorization) in other software:

Details

Severity LOW
CVSS Score 2.0
CVSS Vector CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CWE CWE-285
Public Exploit ✅ No
Source NVD
Published 2026-06-25
Updated 2026-08-20
Modified 2026-06-25

Affected Packages

Software From version Fixed in
github.com/authzed/spicedb — —
unknown — —

Similar Threats

Free Vulnerability Check

Is your site affected by CVE-2026-46668?

BotEraser helps you identify potentially vulnerable plugins and themes by checking your installation against CVE-2026-46668 and other known CVE records.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

Browse related advisories

All advisoriesCVECVE 2026
✓