{
"id": "GHSA-vf77-8h7g-gghp",
"aliases": [
"CVE-2020-13934"
],
"details": "An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests were made, an OutOfMemoryException could occur leading to a denial of service.",
"summary": "Improper Restriction of Operations within the Bounds of a Memory Buffer in Apache Tomcat",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "10.0.0-M1"
},
{
"fixed": "10.0.0-M6"
}
]
}
],
"package": {
"name": "org.apache.tomcat:tomcat",
"ecosystem": "Maven"
},
"database_specific": {
"last_known_affected_version_range": "<= 10.0.0-M5"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "9.0.0.M5"
},
{
"fixed": "9.0.36"
}
]
}
],
"package": {
"name": "org.apache.tomcat:tomcat",
"ecosystem": "Maven"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "8.5.1"
},
{
"fixed": "8.5.56"
}
]
}
],
"package": {
"name": "org.apache.tomcat:tomcat",
"ecosystem": "Maven"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "10.0.0-M1"
},
{
"fixed": "10.0.0-M6"
}
]
}
],
"package": {
"name": "org.apache.tomcat:tomcat-coyote",
"ecosystem": "Maven"
},
"database_specific": {
"last_known_affected_version_range": "<= 10.0.0-M5"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "9.0.0.M5"
},
{
"fixed": "9.0.36"
}
]
}
],
"package": {
"name": "org.apache.tomcat:tomcat-coyote",
"ecosystem": "Maven"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "8.5.1"
},
{
"fixed": "8.5.56"
}
]
}
],
"package": {
"name": "org.apache.tomcat:tomcat-coyote",
"ecosystem": "Maven"
}
}
],
"modified": "2026-05-20T18:50:54Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"published": "2022-02-08T22:05:00Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13934",
"type": "ADVISORY"
},
{
"url": "https://github.com/apache/tomcat",
"type": "PACKAGE"
},
{
"url": "https://lists.apache.org/thread.html/r61f411cf82488d6ec213063fc15feeeb88e31b0ca9c29652ee4f962e%40%3Cannounce.tomcat.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/ra072b1f786e7d139e86f1d1145572e0ff71cef38a96d9c6f5362aac8@%3Cdev.tomcat.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2020/07/msg00017.html",
"type": "WEB"
},
{
"url": "https://security.netapp.com/advisory/ntap-20200724-0003",
"type": "WEB"
},
{
"url": "https://usn.ubuntu.com/4596-1",
"type": "WEB"
},
{
"url": "https://www.debian.org/security/2020/dsa-4727",
"type": "WEB"
},
{
"url": "https://www.oracle.com//security-alerts/cpujul2021.html",
"type": "WEB"
},
{
"url": "https://www.oracle.com/security-alerts/cpuApr2021.html",
"type": "WEB"
},
{
"url": "https://www.oracle.com/security-alerts/cpujan2021.html",
"type": "WEB"
},
{
"url": "https://www.oracle.com/security-alerts/cpujan2022.html",
"type": "WEB"
},
{
"url": "https://www.oracle.com/security-alerts/cpuoct2020.html",
"type": "WEB"
},
{
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html",
"type": "WEB"
},
{
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-476"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": "2020-07-14T15:15:00Z",
"github_reviewed_at": "2021-04-12T18:34:04Z"
}
}