{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74241", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-08-14T19:46:37.191Z", "datePublished": "2026-08-14T22:43:02.202Z", "dateUpdated": "2026-08-14T22:43:02.202Z"}, "containers": {"cna": {"title": "Quay: ldap referral filter injection in quay external ldap authentication", "metrics": [{"other": {"content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "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": [{"vendor": "Red Hat", "product": "Red Hat OpenShift Update Service", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openshift-update-service/openshift-update-service-rhel8", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:openshift_update_service:5"]}, {"vendor": "Red Hat", "product": "Red Hat Quay 3", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "quay/quay-rhel8", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:quay:3"]}, {"vendor": "Red Hat", "product": "Red Hat Quay 3", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "quay/quay-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:quay:3"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-74241", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516141", "name": "RHBZ#2516141", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-08-14T00:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-90", "description": "Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')", "workarounds": [{"lang": "en", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}], "timeline": [{"lang": "en", "time": "2026-08-03T09:28:14.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-08-14T00:00:00.000Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "Red Hat would like to thank meifukun (https://github.com/meifukun) for reporting this issue."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-08-14T22:43:02.202Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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{"affected": [{"affectedData": [{"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:openshift_update_service:5"], "defaultStatus": "affected", "packageName": "openshift-update-service/openshift-update-service-rhel8", "product": "Red Hat OpenShift Update Service", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:quay:3"], "defaultStatus": "affected", "packageName": "quay/quay-rhel8", "product": "Red Hat Quay 3", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:quay:3"], "defaultStatus": "affected", "packageName": "quay/quay-rhel9", "product": "Red Hat Quay 3", "vendor": "Red Hat"}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-74241", "lastModified": "2026-08-14T23:16:34.093", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 2.5, "source": "[email protected]", "type": "Primary"}]}, "published": "2026-08-14T23:16:34.093", "references": [{"source": "[email protected]", "url": "https://access.redhat.com/security/cve/CVE-2026-74241"}, {"source": "[email protected]", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516141"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-90"}], "source": "[email protected]", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank meifukun (https://github.com/meifukun) for reporting this issue.", "bugzilla": {"description": "quay: LDAP referral filter injection in Quay external LDAP authentication", "id": "2516141", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516141"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-90", "details": ["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."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-74241", "package_state": [{"cpe": "cpe:/a:redhat:openshift_update_service:5", "fix_state": "Fix deferred", "package_name": "openshift-update-service/openshift-update-service-rhel8", "product_name": "Red Hat OpenShift Update Service"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Fix deferred", "package_name": "quay/quay-rhel8", "product_name": "Red Hat Quay 3"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Fix deferred", "package_name": "quay/quay-rhel9", "product_name": "Red Hat Quay 3"}], "public_date": "2026-08-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74241\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74241"], "statement": "This Moderate impact flaw in Red Hat Quay's external LDAP authentication arises from improper sanitization of username input during LDAP referral processing. While direct authentication bypass is prevented and directory enumeration is limited, an attacker could exploit this to conduct user-existence oracle attacks against referral DNs, potentially influencing password binds in multi-domain Active Directory setups.", "threat_severity": "Moderate"}

{"created": "2026-08-15T01:00:10.595459+00:00", "updated": "2026-08-15T01:00:10.595465+00:00", "vendors": []}