Apache CXF: The Netty HTTP client transport does not perform TLS hostname verification.
In Apache CXF, the Netty-based HTTP client transport (cxf-rt-transports-http-netty-client) did not verify that the hostname in the server’s TLS certificate matched the host being called. This applied over both HTTP/1.1 and HTTP/2, even when disableCNCheck was left at its default value of false. The certificate chain was validated against the configured trust store, but the endpoint’s identity was not. A network attacker able to intercept traffic could present any certificate trusted by the client, such as a publicly issued certificate for a domain they control, and impersonate the target service. They could then read or modify the exchanged messages, including credentials. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.
CVE-2026-107938
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-2026-107938
Apache CXF
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 CXF",
"versions": [
{
"status": "affected",
"version": "4.2.0",
"lessThan": "4.2.4",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.0.0",
"lessThan": "4.1.9",
"versionType": "semver"
},
{
"status": "affected",
"version": "0",
"lessThan": "3.6.13",
"versionType": "semver"
}
],
"packageURL": "pkg:maven/org.apache.cxf/cxf-rt-transports-http-netty-client",
"packageName": "org.apache.cxf:cxf-rt-transports-http-netty-client",
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-107938
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #29933 · Revision 1
- Added to Heist Feed
- Publisher date