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"cveId": "CVE-2026-68763",
"assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"state": "PUBLISHED",
"assignerShortName": "apache",
"dateReserved": "2026-07-31T15:42:11.281Z",
"datePublished": "2026-08-25T22:00:37.047Z",
"dateUpdated": "2026-08-26T18:36:43.341Z"
},
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"dateUpdated": "2026-08-25T22:00:37.047Z"
},
"title": "Apache Tomcat: DoS via allocation leak in HTTP/2 backlog tracking when a stream is reset",
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-400 Uncontrolled Resource Consumption",
"lang": "en",
"cweId": "CWE-400",
"type": "CWE"
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"source": {
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"product": "Apache Tomcat",
"versions": [
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"version": "11.0.0-M1",
"lessThanOrEqual": "11.0.24",
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"value": "Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120.\n\n\n\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.",
"lang": "en",
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"value": "<p>Uncontrolled Resource Consumption vulnerability in Apache Tomcat&nbsp;via an allocation leak in the HTTP/2 backlog tracking when a stream is reset</p><p>This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120.</p><p>The following versions were EOL at the time the CVE was created but are \nknown to be affected: from 8.5.59 through 8.5.100.&nbsp;Other unsupported versions may also be affected.</p><p>Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.</p>"
}
]
}
],
"references": [
{
"url": "https://lists.apache.org/thread/tv51ty39ppv41v04hdtkp9dp7tg02nzl",
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"content": {
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"value": "GENERAL"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Zhen Kong",
"type": "finder"
}
],
"x_generator": {
"engine": "Vulnogram 0.2.0"
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},
"adp": [
{
"title": "CVE Program Container",
"references": [
{
"url": "http://www.openwall.com/lists/oss-security/2026/08/26/9"
}
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"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2026-08-26T02:30:41.764Z"
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"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
}
},
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-08-26T18:36:23.912058Z",
"id": "CVE-2026-68763",
"options": [
{
"Exploitation": "none"
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{
"Automatable": "yes"
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{
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"role": "CISA Coordinator",
"version": "2.0.3"
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"title": "CISA ADP Vulnrichment",
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"dateUpdated": "2026-08-26T18:36:43.341Z"
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