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Fencer Vulns
medium 4.2

CVE-2024-5891 json

Quay: unauthorized user may authenticate via oauth application token

published 2024-06-12 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-47026

cvss
4.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 13%
public exploits
0
none known

Summary

A vulnerability was found in Quay. If an attacker can obtain the client ID for an application, they can use an OAuth token to authenticate despite not having access to the organization from which the application was created. This issue is limited to authentication and not authorization. However, in configurations where endpoints rely only on authentication, a user may authenticate to applications they otherwise have no access to.

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.2 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
NVD 3.1 4.2 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected products

  • Red Hat Red Hat Quay 3

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.