CVE-2026-107938
CRITICALDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 9% of all known CVEs.
References
Related Vulnerabilities
Other CWE-297 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2014-3522 | Medium | 4.0 | 5.6% | - | Fix |
| CVE-2018-10936 | High | 8.1 | 2.9% | - | Fix |
| CVE-2020-1887 | Critical | 9.1 | 1.6% | - | Fix |
| CVE-2024-2466 | Medium | 6.5 | 1.5% | - | Fix |
| CVE-2020-14387 | High | 7.4 | 1.1% | - | Fix |
| CVE-2020-15260 | Medium | 6.8 | 1.0% | - | Fix |
Common questions
How do I fix CVE-2026-107938?
Upgrade cxf to 4.1.9 or later.
Is CVE-2026-107938 being actively exploited?
Not that we know of. CVE-2026-107938 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.19% is the estimated probability that it will be exploited in the next 30 days. That is higher than 9% of all scored CVEs.
How severe is CVE-2026-107938?
CVE-2026-107938 has a CVSS v3 base score of 9.1, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2026-107938 affect?
Published advisories record a fix for cxf (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2026-107938
Markdown
[](https://tridentstack.com/cve/CVE-2026-107938)HTML
<a href="https://tridentstack.com/cve/CVE-2026-107938"><img src="https://tridentstack.com/cve/badge/CVE-2026-107938.svg" alt="CVE-2026-107938"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-16.