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CVE-2026-74241 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CNA: [email protected]CVSS-B:4.8 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/security/cve/CVE-2026-74241	[email protected]	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2516141	[email protected]	Issue TrackingVendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-90	Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')	[email protected]

Affected Products

Product	Versions
redhat openshift update service	All versions
CPE cpe:2.3:a:redhat:openshift_update_service:-:::::::* Remediation No remediation found in references.
redhat quay	3.0.0
CPE cpe:2.3:a:redhat:quay:3.0.0:::::::* Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Aug 20, 2026	Initial Analysis	[email protected]
Aug 17, 2026	CVE Modified	CISA-ADP
Aug 14, 2026	New CVE Received	[email protected]