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        "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "state": "PUBLISHED",
        "assignerShortName": "apache",
        "dateReserved": "2026-04-27T22:13:05.647Z",
        "datePublished": "2026-05-12T15:17:56.531Z",
        "dateUpdated": "2026-05-13T15:59:04.361Z"
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                    "product": "Apache Tomcat",
                    "vendor": "Apache Software Foundation",
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                            "lessThanOrEqual": "11.0.21",
                            "status": "affected",
                            "version": "11.0.0-M1",
                            "versionType": "semver"
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                            "version": "10.1.0-M1",
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                            "lessThanOrEqual": "9.0.117",
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                            "version": "9.0.2",
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                            "version": "8.5.24",
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                            "value": "<p>Exposure of HTTP Authentication Header to unexpected hosts during WebSocket authentication vulnerability in Apache Tomcat.</p><p>This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.2 through 9.0.117, from 8.5.24 through 8.5.100, from 7.0.83 through 7.0.109.</p><p>Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118, which fix the issue.</p>"
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                            "text": "low"
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                            "cweId": "CWE-200",
                            "description": "CWE-200 Exposure of HTTP Authentication Header to unexpected hosts",
                            "lang": "en",
                            "type": "CWE"
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                "shortName": "apache",
                "dateUpdated": "2026-05-12T15:17:56.531Z"
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            "references": [
                {
                    "tags": [
                        "vendor-advisory"
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                    "url": "https://lists.apache.org/thread/n61zwf75jrv09rz90j4jssncm244bwdb"
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            "source": {
                "discovery": "EXTERNAL"
            },
            "title": "Apache Tomcat: WebSocket authentication header exposure",
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        "adp": [
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "http://www.openwall.com/lists/oss-security/2026/05/12/14"
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                    "dateUpdated": "2026-05-12T17:40:58.470Z"
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                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 7.3,
                            "attackVector": "NETWORK",
                            "baseSeverity": "HIGH",
                            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
                            "integrityImpact": "LOW",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "LOW",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "LOW"
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                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-05-13T15:58:45.406125Z",
                                "id": "CVE-2026-42498",
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                                        "Exploitation": "none"
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                                        "Technical Impact": "partial"
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                                "role": "CISA Coordinator",
                                "version": "2.0.3"
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                "title": "CISA ADP Vulnrichment",
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