CVE-2026-74241 — MEDIUM (4.8)

Vulnerability Description

A flaw was found in Red Hat Quay's external Lightweight Directory Access Protocol (LDAP) authentication handling. When an LDAP referral is returned during authentication, the system does not properly escape the username input. This allows an attacker to inject LDAP filter metacharacters, enabling user-existence oracle attacks at the referral Directory Name (DN). This could also potentially influence which DN is used for password binding in multi-domain Active Directory environments.

CVSS Score

4.8

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Redhat	Openshift Update Service	-
Redhat	Quay	3.0.0

Related Weaknesses (CWE)

CWE-90

References

https://access.redhat.com/security/cve/CVE-2026-74241Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2516141Issue TrackingVendor Advisory

FAQ

What is CVE-2026-74241?

CVE-2026-74241 is a vulnerability with a CVSS score of 4.8 (MEDIUM). A flaw was found in Red Hat Quay's external Lightweight Directory Access Protocol (LDAP) authentication handling. When an LDAP referral is returned during authentication, the system does not properly ...

How severe is CVE-2026-74241?

CVE-2026-74241 has been rated MEDIUM with a CVSS base score of 4.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-74241?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Openshift Update Service, Redhat Quay.