CVE-2024-38361Public exploitNetwork attack vector

Authorization denial via incomplete exclusion dispatch

Published Jun 20, 2024 · Updated Aug 2, 2024

Authorization error in AuthZed SpiceDB before 1.33.1 allows remote attackers to make CheckPermission deny valid access. The exclusion dispatcher requests only one result from the first branch of an exclusion under an arrow, omitting other matching resources. The schema must combine an arrow with an exclusion and multiple parent resources; the resulting NO_PERMISSION response can incorrectly block authorized operations.

CVSS severity3.7
Low
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization error in AuthZed SpiceDB before 1.33.1 allows remote attackers to make CheckPermission deny valid access. The exclusion dispatcher requests only one result from the first branch of an exclusion under an arrow, omitting other matching resources. The schema must combine an arrow with an exclusion and multiple parent resources; the resulting NO_PERMISSION response can incorrectly block authorized operations.

The record

CVE
CVE-2024-38361
Published
Jun 20, 2024
Updated
Aug 2, 2024
Vendor
AuthZed
Product
SpiceDB
Classifications
CWE-281
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.33.1
  2. Affected versionversion=< 1.33.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

AuthZed · SpiceDBversion=0 <1.33.1; version=< 1.33.1

Published CVSS scores

3.7GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
5.3NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-281Improper Preservation of Permissions

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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