Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-74241

CVE-2026-74241MEDIUM

Red Hat Red Hat OpenShift Update Service — Quay: ldap referral filter injection in quay external ldap authentication

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  L  L  N    6.5   .0031   21.6     —

AFFECTED
  Product                           Versions     Fixed
  Red Hat OpenShift Update Service  unspecified  —
  Red Hat Quay 3                    unspecified  —
  Red Hat Quay 3                    unspecified  —

TIMELINE
  Aug 14  Reserved by redhat
  Aug 14  Published (CNA: redhat)
  Aug 20  RESCORED — CVE-2026-74241 (Red Hat OpenShift Update Service). CVSS 4.8 → 6.5 (NVD).

CWE-90 · CNA: redhat · CVSS v3.1 · 2 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 14, 2026	Reserved	Reserved by redhat
August 14, 2026	Published	Published (CNA: redhat)
August 20, 2026	RESCORED	RESCORED — CVE-2026-74241 (Red Hat OpenShift Update Service). CVSS 4.8 → 6.5 (NVD).

Affected

Affected products and packages — 3 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Red Hat	Red Hat OpenShift Update Service	—	—	—
Red Hat	Red Hat Quay 3	—	—	—
Red Hat	Red Hat Quay 3	—	—	—

Weaknesses

CWE-90

References (2)

https://access.redhat.com/security/cve/CVE-2026-74241 [Vendor Advisory]
https://bugzilla.redhat.com/show_bug.cgi?id=2516141 [Issue Tracking, Vendor Advisory]

Authoritative record: CVE-2026-74241 at cve.org

Vendors: red hat

Weaknesses: CWE-90

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-74241 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.