{
"id": "GHSA-j39c-c8hj-x4j3",
"aliases": [
"CVE-2021-25122"
],
"details": "When responding to new h2c connection requests, Apache Tomcat versions 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41 and 8.5.0 to 8.5.61 could duplicate request headers and a limited amount of request body from one request to another meaning user A and user B could both see the results of user A's request.",
"summary": "Exposure of Sensitive Information to an Unauthorized Actor in Apache Tomcat",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "10.0.0-M1"
},
{
"fixed": "10.0.2"
}
]
}
],
"package": {
"name": "org.apache.tomcat.embed:tomcat-embed-core",
"ecosystem": "Maven"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "9.0.0-M1"
},
{
"fixed": "9.0.43"
}
]
}
],
"package": {
"name": "org.apache.tomcat.embed:tomcat-embed-core",
"ecosystem": "Maven"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "8.5.0"
},
{
"fixed": "8.5.63"
}
]
}
],
"package": {
"name": "org.apache.tomcat.embed:tomcat-embed-core",
"ecosystem": "Maven"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "10.0.0-M1"
},
{
"fixed": "10.0.2"
}
]
}
],
"package": {
"name": "org.apache.tomcat:tomcat-coyote",
"ecosystem": "Maven"
}
}
],
"modified": "2026-08-25T18:31:34Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"published": "2021-06-16T17:45:29Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25122",
"type": "ADVISORY"
},
{
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html",
"type": "WEB"
},
{
"url": "https://www.oracle.com/security-alerts/cpujan2022.html",
"type": "WEB"
},
{
"url": "https://www.oracle.com//security-alerts/cpujul2021.html",
"type": "WEB"
},
{
"url": "https://www.debian.org/security/2021/dsa-4891",
"type": "WEB"
},
{
"url": "https://security.netapp.com/advisory/ntap-20210409-0002",
"type": "WEB"
},
{
"url": "https://security.gentoo.org/glsa/202208-34",
"type": "WEB"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00018.html",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/rf6d5d57b114678d8898005faef31e9fd6d7c981fcc4ccfc3bc272fc9@%3Cdev.tomcat.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/rf6d5d57b114678d8898005faef31e9fd6d7c981fcc4ccfc3bc272fc9%40%3Cdev.tomcat.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/rd0463f9a5cbc02a485404c4b990f0da452e5ac5c237808edba11c947@%3Cusers.tomcat.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/rd0463f9a5cbc02a485404c4b990f0da452e5ac5c237808edba11c947%40%3Cusers.tomcat.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/rcd90bf36b1877e1310b87ecd14ed7bbb15da52b297efd9f0e7253a3b@%3Cusers.tomcat.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/rcd90bf36b1877e1310b87ecd14ed7bbb15da52b297efd9f0e7253a3b%40%3Cusers.tomcat.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7@%3Cusers.tomcat.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7@%3Cdev.tomcat.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7@%3Cannounce.tomcat.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7@%3Cannounce.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cusers.tomcat.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cdev.tomcat.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3E",
"type": "WEB"
},
{
"url": "https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.apache.org%3E",
"type": "WEB"
},
{
"url": "https://github.com/apache/tomcat",
"type": "PACKAGE"
},
{
"url": "http://www.openwall.com/lists/oss-security/2021/03/01/1",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-200"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": "2021-03-01T12:15:00Z",
"github_reviewed_at": "2021-03-24T19:53:13Z"
}
}