{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-12667", "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "state": "PUBLISHED", "assignerShortName": "ibm", "dateReserved": "2026-06-18T20:29:30.669Z", "datePublished": "2026-09-15T17:07:31.538Z", "dateUpdated": "2026-09-15T17:07:31.538Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-09-15T17:07:31.538Z"}, "title": "IBM MQ .NET client is vulnerable to XML external entity injection", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-611", "description": "CWE-611 Improper Restriction of XML External Entity Reference", "type": "CWE"}]}], "affected": [{"vendor": "IBM", "product": "MQ", "versions": [{"status": "affected", "version": "9.1.0.0", "lessThanOrEqual": "9.1.0.37 LTS", "versionType": "semver"}, {"status": "affected", "version": "9.2.0.0", "lessThanOrEqual": "9.2.0.43 LTS", "versionType": "semver"}, {"status": "affected", "version": "9.3.0.0", "lessThanOrEqual": "9.3.0.41 LTS", "versionType": "semver"}, {"status": "affected", "version": "9.3.0.0", "lessThanOrEqual": "9.3.5.1 CD", "versionType": "semver"}, {"status": "affected", "version": "9.4.0.0", "lessThanOrEqual": "9.4.0.25 LTS", "versionType": "semver"}, {"status": "affected", "version": "9.4.0.0", "lessThanOrEqual": "9.4.5.1 CD", "versionType": "semver"}, {"status": "affected", "version": "10.0.0.0"}], "cpes": ["cpe:2.3:a:ibm:mq:9.1.0.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.1.0.37:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.2.0.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.2.0.43:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.3.0.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.3.0.41:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.3.5.1:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.4.0.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.4.0.25:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.4.5.1:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:10.0.0.0:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 could allow an authenticated attacker to read files from a vulnerable .NET client or cause limited denial of service due to improper handling of XML external entities in RFH2 folder parsing.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 could allow an authenticated attacker to read files from a vulnerable .NET client or cause limited denial of service due to improper handling of XML external entities in RFH2 folder parsing.</p>"}]}], "references": [{"url": "https://www.ibm.com/support/pages/node/7284936", "tags": ["vendor-advisory", "patch"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "LOW", "baseSeverity": "HIGH", "baseScore": 7.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L"}}], "solutions": [{"lang": "en", "value": "This issue was addressed under Known Issue DT474690\n\n\n\nIBM MQ version 9.1 LTS\n\n\n\n Apply cumulative security update 9.1.0.38 https://www.ibm.com/support/pages/downloading-ibm-mq-91-lts \n\n\n\nIBM MQ version 9.2 LTS\n\n\n\n Apply cumulative security update 9.2.0.44 https://www.ibm.com/support/pages/downloading-ibm-mq-92-lts \n\n\n\nIBM MQ version 9.3 LTS\n\n\n\n Apply cumulative security update 9.3.0.42 https://www.ibm.com/support/pages/downloading-ibm-mq-93-lts \n\n\n\nIBM MQ version 9.4 LTS\n\n\n\n Apply cumulative security update https://www.ibm.com/support/pages/downloading-ibm-mq-94-lts \u00a09.4.0.26 https://www.ibm.com/support/pages/downloading-ibm-mq-94-lts \n\n\n\nIBM MQ version 9.3 CD, 9.4 CD and 10.0.0.0\n\n\n\n Upgrade to IBM MQ version 10.0.0.5 https://www.ibm.com/support/pages/downloading-ibm-mq-100", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>This issue was addressed under Known Issue DT474690</p><p>IBM MQ version 9.1 LTS</p><p><a href=\"https://www.ibm.com/support/pages/downloading-ibm-mq-91-lts\" rel=\"noopener noreferrer nofollow\">Apply cumulative security update 9.1.0.38</a></p><p>IBM MQ version 9.2 LTS</p><p><a href=\"https://www.ibm.com/support/pages/downloading-ibm-mq-92-lts\" rel=\"noopener noreferrer nofollow\">Apply cumulative security update 9.2.0.44</a></p><p>IBM MQ version 9.3 LTS</p><p><a href=\"https://www.ibm.com/support/pages/downloading-ibm-mq-93-lts\" rel=\"noopener noreferrer nofollow\">Apply cumulative security update 9.3.0.42</a></p><p>IBM MQ version 9.4 LTS</p><p><a href=\"https://www.ibm.com/support/pages/downloading-ibm-mq-94-lts\" rel=\"noopener noreferrer nofollow\">Apply cumulative security update</a><a href=\"https://www.ibm.com/support/pages/downloading-ibm-mq-94-lts\" rel=\"noopener noreferrer nofollow\">\u00a09.4.0.26</a></p><p>IBM MQ version 9.3 CD, 9.4 CD and 10.0.0.0</p><p><a href=\"https://www.ibm.com/support/pages/downloading-ibm-mq-100\" rel=\"noopener noreferrer nofollow\">Upgrade to IBM MQ version 10.0.0.5</a></p>"}]}]}}}

{}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:ibm:mq:9.1.0.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.1.0.37:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.2.0.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.2.0.43:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.3.0.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.3.0.41:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.3.5.1:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.4.0.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.4.0.25:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:9.4.5.1:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:mq:10.0.0.0:*:*:*:*:*:*:*"], "product": "MQ", "vendor": "IBM", "versions": [{"lessThanOrEqual": "9.1.0.37 LTS", "status": "affected", "version": "9.1.0.0", "versionType": "semver"}, {"lessThanOrEqual": "9.2.0.43 LTS", "status": "affected", "version": "9.2.0.0", "versionType": "semver"}, {"lessThanOrEqual": "9.3.0.41 LTS", "status": "affected", "version": "9.3.0.0", "versionType": "semver"}, {"lessThanOrEqual": "9.3.5.1 CD", "status": "affected", "version": "9.3.0.0", "versionType": "semver"}, {"lessThanOrEqual": "9.4.0.25 LTS", "status": "affected", "version": "9.4.0.0", "versionType": "semver"}, {"lessThanOrEqual": "9.4.5.1 CD", "status": "affected", "version": "9.4.0.0", "versionType": "semver"}, {"status": "affected", "version": "10.0.0.0"}]}], "source": "psirt@us.ibm.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 could allow an authenticated attacker to read files from a vulnerable .NET client or cause limited denial of service due to improper handling of XML external entities in RFH2 folder parsing."}], "id": "CVE-2026-12667", "lastModified": "2026-09-15T18:17:14.420", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "psirt@us.ibm.com", "type": "Primary"}]}, "published": "2026-09-15T18:17:14.420", "references": [{"source": "psirt@us.ibm.com", "url": "https://www.ibm.com/support/pages/node/7284936"}], "sourceIdentifier": "psirt@us.ibm.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-611"}], "source": "psirt@us.ibm.com", "type": "Primary"}]}

{}

{}