Red HatCVE-2026-74241
Red Hat Quay: attacker could inject LDAP filter metacharacters
Medium4.8CVE-2026-74241 · Published Aug 14, 2026 · updated Aug 20, 2026
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Red Hat OpenShift Update Service Product | all versions | No fix yet |
| Red Hat Quay 3 Product | all versions | No fix yet |
| all versions | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-90
More Red Hat advisories
All Red Hat| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 14 | Red Hat Quay: information disclosure | Medium5.3 | No fix yet |
| Aug 14 | Red Hat Quay.: path traversal | Medium6.5 | No fix yet |
| Aug 14 | Red Hat Quay: improper signature check | Medium5.9 | No fix yet |
| Aug 14 | Red Hat Quay: information disclosure | Medium5.9 | No fix yet |
| Aug 14 | Red Hat Quay: server-side request forgery | Medium4.2 | No fix yet |
| Aug 14 | Red Hat Quay: improper authentication | Medium5.4 | No fix yet |