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 3.1 6.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat OpenShift Update Service | — |
| Red Hat | Red Hat Quay 3 | — |
| Red Hat | Red Hat Quay 3 | — |
References
- https://access.redhat.com/security/cve/CVE-2026-74241Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2516141Issue Tracking, Vendor Advisory
Timeline
- Published
- Aug 14, 2026
- Last modified
- Aug 20, 2026
- NVD status
- Analyzed