PatchTheCEVhttpclient vulnerabilities and fixes
Recent CVEs affecting httpclient, with upgrade or downgrade steps. 2 tracked.
httpclient has 2 tracked vulnerabilities, 1 critical. A fixed release or vendor patch exists for 2. Most recent: 2026-08-11. Highest priority: CVE-2026-71290 (score 51/100).
- CVE-2026-64607 MEDIUM 5.3 UPGRADE HttpClient based on the classic i/o model fails to correctly release the underlying connection back to the con
- CVE-2026-71290 CRITICAL 9.1 UPGRADE Improper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer. HostnameVerific
FAQ
How do I fix httpclient vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is httpclient being exploited right now?
None of the tracked httpclient CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which httpclient CVE should I patch first?
CVE-2026-71290 currently ranks highest (51/100): Improper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer. HostnameVerific.