Apache Tomcat: AJP DoS via missing request body
Allocation of resources without limits or throttling vulnerability in Apache Tomcat allows an unauthenticated AJP request to pin an AJP processing thread leading to denial of service. This issue affects Apache Tomcat: from 11.0.0 through 11.0.25, from 10.1.0 through 10.1.59, from 9.0.0 through 9.0.121. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
BIT-tomcat-2026-78383
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:BIT-tomcat-2026-78383
tomcat
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 9.0.45
Source reference:
/affected/0/ranges10.1.60Source reference:
/affected/0/ranges11.0.26Source reference:
/affected/0/ranges9.0.122Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "7.0.0"
},
{
"fixed": "9.0.45"
},
{
"introduced": "10.1.0"
},
{
"fixed": "10.1.60"
},
{
"introduced": "11.0.0"
},
{
"fixed": "11.0.26"
},
{
"introduced": "9.0.0"
},
{
"fixed": "9.0.122"
}
]
}
],
"package": {
"name": "tomcat",
"purl": "pkg:bitnami/tomcat",
"ecosystem": "Bitnami"
},
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"database_specific": {
"source": "https://github.com/bitnami/vulndb/tree/main/data/tomcat/BIT-tomcat-2026-78383.json"
}
}
]- Related CVEs
- CVE-2026-78383
Source reference:
/aliases
Publisher severity
high
Source reference: /database_specific/severity
- Event
- #59558 · Revision 1
- Added to Heist Feed
- Publisher date