Apache HttpClient versions prior to version 4.5.13 and 5.0.3 can misinterpret malformed authority component in request URIs passed to the library as java.net.URI object and pick the wrong target host for request execution.
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This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Apache HttpClient versions prior to version 4.5.13 and 5.0.3 can misinterpret malformed authority component in request URIs passed to the library as java.net.URI object and pick the wrong target host for request execution.
December 2, 2020
December 1, 2025
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | libhttpclient-java (4.5.1-1ubuntu0.1~esm1) @ xenial | 2026-05-23 | ubuntu |
| redhat | patch | 2023-06-29 | redhat |
| redhat | maven:3.6-8060020211119162118.5dbfe8be | 2022-05-10 | redhat |
| redhat | maven:3.5-8060020211117110044.c0229ad2 | 2022-05-10 | redhat |
| redhat | rh-maven36-httpcomponents-client-0:4.5.9-1.3.el7 | 2022-03-01 | redhat |
| redhat | httpclient | 2021-11-02 | redhat |
| redhat | eap7-wildfly-http-client-0:1.0.24-1.Final_redhat_00001.1.el8eap | 2021-01-25 | redhat |
| redhat | eap7-wildfly-http-client-0:1.0.24-1.Final_redhat_00001.1.el6eap | 2021-01-25 | redhat |
| redhat | eap7-wildfly-http-client-0:1.0.24-1.Final_redhat_00001.1.el7eap | 2021-01-25 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| org.apache.httpcomponents:httpclient | — | 5.0.3 | — |
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
RHSA-2021:0084 — Moderate
RHSA-2021:0246 — Moderate
RHSA-2021:0247 — Moderate
RHSA-2021:0248 — Moderate
RHSA-2021:0250 — Moderate
RHSA-2021:0327 — Moderate
RHSA-2021:0811 — Moderate
RHSA-2021:3140 — Moderate
RHSA-2021:3700 — Moderate
RHSA-2021:4100 — Moderate
RHSA-2022:0722 — Moderate
RHSA-2022:1860 — Moderate
RHSA-2022:1861 — Moderate
RHSA-2023:3954 — Moderate
HttpClient vulnerability
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
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