What is CVE-2026-74241?

CVE-2026-74241 is a medium-severity vulnerability in Red Hat Openshift Update Service, classified under LDAP Injection. CVSS score: 4.8/10. Published 2026-08-14.

How severe is CVE-2026-74241?

Medium severity. CVSS v3 base score is 4.8 out of 10.

LDAP Injection in Red Hat Openshift Update Service

CVE-2026-74241

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 v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

CWE-90 — LDAP Injection

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking)

Frequently asked questions

What is CVE-2026-74241?: CVE-2026-74241 is a medium-severity vulnerability in Red Hat Openshift Update Service, classified under LDAP Injection. CVSS score: 4.8/10. Published 2026-08-14.
How severe is CVE-2026-74241?: Medium severity. CVSS v3 base score is 4.8 out of 10.