Answer in brief
CVE-2020-13956 records a Medium severity (CVSS 5.3) vulnerability in CVE Program Container. The current sources do not mark it as known exploited. The current feed maps n/a/Apache HttpClient (generic), org.apache.httpcomponents:httpclient (maven), org.apache.httpcomponents:httpclient (maven). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps n/a/Apache HttpClient (generic), org.apache.httpcomponents:httpclient (maven), org.apache.httpcomponents:httpclient (maven). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| n/a/Apache HttpClientgeneric | 4.5.12 and prior 5.0.2 and prior | Not reported |
| org.apache.httpcomponents:httpclientmaven | >=0 <4.5.13 | 4.5.13 |
| org.apache.httpcomponents:httpclientmaven | >=5.0.0 <5.0.3 | 5.0.3 |
Published upstream
Dec 2, 2020
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 7, 2026
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.
Quoted source text, attributed separately from HOL analysis.