Status: UPDATED | Advisory ID: CVE-2026-71290
| CVE | CVE-2026-71290 |
| CVSS Score / Version | 9.1 (Critical) / CVSS v3.1 |
| Updated | 2026-09-24 |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| CVSS Prose | attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is none. |
| Affected products | Apache httpclient and Apache Software Foundation Apache HttpComponents Client |
| Classified as | CWE-295 (Improper Certificate Validation) |
| Vendor | Product | Affected Versions | Patch Status |
|---|---|---|---|
| Apache | httpclient | ||
| Apache Software Foundation | Apache HttpComponents Client |
| Subsystems | General OT |
| Sectors | Multiple |
Improper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer. HostnameVerificationPolicy#BUILTIN setting has no effect when used with the async version of HttpClient. An attacker that can intercept and modify traffic between the client and the server can impersonate the server by presenting a valid certificate for a different domain.
Please note the classic version of HttpClient is not affected by this vulnerability.
Affected users are recommended to upgrade to at least version 5.6.4, which fixes the issue. (NVD)
Monitor Apache's and Apache Software Foundation's web pages for any future patch releases.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-71290 |
| CVE | https://www.cve.org/CVERecord?id=CVE-2026-71290 |