Apache Tomcat: HTTP/2 request/response mix-up after error during async processing
Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous servlets can trigger request and/or response mix-up between users. This issue affects Apache Tomcat: from 11.0.22 through 11.0.26, from 10.1.55 through 10.1.60, from 9.0.118 through 9.0.122. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fixes the issue.
CVE-2026-101356
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: cve:CVE-2026-101356
Apache Tomcat
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Apache Software Foundation",
"product": "Apache Tomcat",
"versions": [
{
"status": "affected",
"version": "11.0.22",
"versionType": "semver",
"lessThanOrEqual": "11.0.26"
},
{
"status": "affected",
"version": "10.1.55",
"versionType": "semver",
"lessThanOrEqual": "10.1.60"
},
{
"status": "affected",
"version": "9.0.118",
"versionType": "semver",
"lessThanOrEqual": "9.0.122"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-101356
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #42436 · Revision 1
- Added to Heist Feed
- Publisher date