CVE-2024-5891Network attack vector

Cross-organization authentication via unchecked OAuth application scope

Published Jun 12, 2024 · Updated Aug 2, 2024

Weak authentication in Red Hat Quay allows remote authenticated users to authenticate to applications from inaccessible organizations. The OAuth application flow accepts a valid token paired with an application's client ID without confirming that the token holder can access the organization that created the application. The attacker must obtain the client ID and a usable OAuth token; effects are confined to endpoints that treat authentication alone as sufficient.

CVSS severity4.2
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak authentication in Red Hat Quay allows remote authenticated users to authenticate to applications from inaccessible organizations. The OAuth application flow accepts a valid token paired with an application's client ID without confirming that the token holder can access the organization that created the application. The attacker must obtain the client ID and a usable OAuth token; effects are confined to endpoints that treat authentication alone as sufficient.

The record

CVE
CVE-2024-5891
Published
Jun 12, 2024
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1390, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 12, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.2Red Hat, Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1390Weak Authentication
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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