{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-11906", "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "state": "PUBLISHED", "assignerShortName": "ibm", "dateReserved": "2026-06-10T16:11:41.935Z", "datePublished": "2026-06-30T19:42:08.459Z", "dateUpdated": "2026-07-01T15:53:31.824Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-06-30T19:42:08.459Z"}, "title": "IBM\u00ae Db2\u00ae federated server is vulnerable to a denial of service due to improper neutralization of special elements in the data query logic of XMLTable-derived columns by autheticated user", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-1284", "description": "CWE-1284 Improper Validation of Specified Quantity in Input", "type": "CWE"}]}], "affected": [{"vendor": "IBM", "product": "Db2", "versions": [{"status": "affected", "version": "11.5.0", "lessThanOrEqual": "11.5.9", "versionType": "semver"}, {"status": "affected", "version": "12.1.0", "lessThanOrEqual": "12.1.4", "versionType": "semver"}], "cpes": ["cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:db2:12.1.4:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow an\u00a0authenticated user to cause a denial of service due to improper neutralization of special\u00a0elements in the data query logic of XMLTable-derived columns.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow an&nbsp;authenticated user to cause a denial of service due to improper neutralization of special&nbsp;elements in the data query logic of XMLTable-derived columns.</p>"}]}], "references": [{"url": "https://www.ibm.com/support/pages/node/7277423", "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": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseSeverity": "MEDIUM", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}}], "solutions": [{"lang": "en", "value": "Customers running any vulnerable affected level of an affected Program, V11.5, and V12.1, can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent level for each impacted release:V11.5.9, and V12.1.4. They can be applied to any affected level of the appropriate release to remediate this vulnerability.\n\n\n\n\n\nReleaseFixed in mod packAPARDownload URLV11.5TBD https://www.ibm.com/support/pages/node/7087189 \n\n\n\nV12.1\n\n\n\n\n\n\n\nTBD\n\n\n\n\n\n https://www.ibm.com/support/pages/node/7267513 \n\n\n\n\n\nIBM does not disclose key Db2 functionality nor replication steps for a vulnerability to avoid providing too much information to any potential malicious attacker. IBM does not want to enable a malicious attacker with sufficient knowledge to craft an exploit of the vulnerability.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Customers running any vulnerable affected level of an affected Program, V11.5, and V12.1, can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent level for each impacted release:V11.5.9, and V12.1.4. They can be applied to any affected level of the appropriate release to remediate this vulnerability.</p><p></p><div><table><tbody><tr><td><strong>Release</strong></td><td><strong>Fixed in mod pack</strong></td><td><strong>APAR</strong></td><td><strong>Download URL</strong></td></tr><tr><td>V11.5</td><td>TBD</td><td><a href=\"https://www.ibm.com/mysupport/s/defect/aCIgJ000000BsUv/dt466352\" rel=\"nofollow\">DT466352</a></td><td><p>Special Build #84653 or later for V11.5.9 available at this link:<br/><a href=\"https://www.ibm.com/support/pages/node/7087189\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/support/pages/node/7087189</a></p></td></tr><tr><td><p>V12.1</p><p></p></td><td><p>TBD</p><p></p></td><td><a href=\"https://www.ibm.com/mysupport/s/defect/aCIgJ000000BsUv/dt466352\" rel=\"nofollow\">DT466352</a><br/><p></p></td><td><p>Special Build #86230 or later for V12.1.4 available at this link:<br/><a href=\"https://www.ibm.com/support/pages/node/7267513\" rel=\"nofollow\">https://www.ibm.com/support/pages/node/7267513</a></p></td></tr></tbody></table></div><p>IBM does not disclose key Db2 functionality nor replication steps for a vulnerability to avoid providing too much information to any potential malicious attacker. 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{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-11906", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-01T15:53:15.458939Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-01T15:53:20.531Z"}}], "cna": {"title": "IBM\u00ae Db2\u00ae federated server is vulnerable to a denial of service due to improper neutralization of special elements in the data query logic of XMLTable-derived columns by autheticated user", "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"cpes": ["cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:db2:12.1.4:*:*:*:*:*:*:*"], "vendor": "IBM", "product": "Db2", "versions": [{"status": "affected", "version": "11.5.0", "versionType": "semver", "lessThanOrEqual": "11.5.9"}, {"status": "affected", "version": "12.1.0", "versionType": "semver", "lessThanOrEqual": "12.1.4"}]}], "solutions": [{"lang": "en", "value": "Customers running any vulnerable affected level of an affected Program, V11.5, and V12.1, can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent level for each impacted release:V11.5.9, and V12.1.4. They can be applied to any affected level of the appropriate release to remediate this vulnerability.\n\n\n\n\n\nReleaseFixed in mod packAPARDownload URLV11.5TBD https://www.ibm.com/support/pages/node/7087189 \n\n\n\nV12.1\n\n\n\n\n\n\n\nTBD\n\n\n\n\n\n https://www.ibm.com/support/pages/node/7267513 \n\n\n\n\n\nIBM does not disclose key Db2 functionality nor replication steps for a vulnerability to avoid providing too much information to any potential malicious attacker. IBM does not want to enable a malicious attacker with sufficient knowledge to craft an exploit of the vulnerability.", "supportingMedia": [{"type": "text/html", "value": "<p>Customers running any vulnerable affected level of an affected Program, V11.5, and V12.1, can download the special build containing the interim fix for this issue from Fix Central. 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They can be applied to any affected level of the appropriate release to remediate this vulnerability.</p><p></p><div><table><tbody><tr><td><strong>Release</strong></td><td><strong>Fixed in mod pack</strong></td><td><strong>APAR</strong></td><td><strong>Download URL</strong></td></tr><tr><td>V11.5</td><td>TBD</td><td><a href=\"https://www.ibm.com/mysupport/s/defect/aCIgJ000000BsUv/dt466352\" rel=\"nofollow\">DT466352</a></td><td><p>Special Build #84653 or later for V11.5.9 available at this link:<br/><a href=\"https://www.ibm.com/support/pages/node/7087189\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/support/pages/node/7087189</a></p></td></tr><tr><td><p>V12.1</p><p></p></td><td><p>TBD</p><p></p></td><td><a href=\"https://www.ibm.com/mysupport/s/defect/aCIgJ000000BsUv/dt466352\" rel=\"nofollow\">DT466352</a><br/><p></p></td><td><p>Special Build #86230 or later for V12.1.4 available at this link:<br/><a href=\"https://www.ibm.com/support/pages/node/7267513\" rel=\"nofollow\">https://www.ibm.com/support/pages/node/7267513</a></p></td></tr></tbody></table></div><p>IBM does not disclose key Db2 functionality nor replication steps for a vulnerability to avoid providing too much information to any potential malicious attacker. 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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[11.5.0,11.5.9]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[12.1.0,12.1.4]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Db2", "source": "cna", "vendor": "IBM"}, "product": "db2", "vendor": "ibm"}], "created": "2026-06-30T21:30:17.318148+00:00", "updated": "2026-07-01T15:00:06.289110+00:00", "vendors": ["ibm", "ibm$PRODUCT$db2"]}