Vulnerability record · CVE-2026-74241 · published 14 August 2026

CVE-2026-74241: Redhat openshift update service ldap injection vulnerability

Redhat · Openshift Update Service

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.

6.5 CVSS 3.1 Medium EPSS 0.31% · top 78.6% CWE-90 · LDAP injection

6.5CVSS 3.1 base score

0.31%EPSS exploitation probability, 30 days

NoNot in CISA KEV

2Affected product versions listed by NVD

2References

20 Aug 2026Last modified by NVD

Description

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Openshift Update Service Redhat

Quay Redhat

References

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

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-74241), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.