CVE-2026-74241
Quay: ldap referral filter injection in quay external ldap authentication
- State
- Published
- Severity
- 4.8 Medium
- Published
- Aug 14, 2026
- Updated
- Nov 1, 2026
- Reserved
- Aug 14, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.8 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N | redhat |
Weaknesses
- CWE-90 Improper Neutralization of Special Elements used in an LDAP Query
Affected Products
| Product | Versions |
|---|---|
Red Hat OpenShift Update ServiceRed Hat | |
Red Hat Quay 3Red Hat | |
Red Hat Quay 3Red Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-74241vdb-entry
- RHBZ#2516141issue-tracking
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