MEDIUM
CVE-2020-13956
NVD-CWE-noinfoPublished: December 2, 2020· Updated: Jun 17, 2026
5.3
CVSS v3.1
Official Description
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.
Technical Analysis
CVE-2020-13956 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected Vendors & Products
Apache1 product(s)
httpclient
netapp2 product(s)
active iq unified managersnapcenter
Oracle13 product(s)
data integratorjd edwards enterpriseone orchestratorjd edwards enterpriseone toolsnosql databasepeoplesoft enterprise peopletoolspeoplesoft enterprise pt peopletoolsprimavera unifierretail customer management and segmentation foundationspatial studiosql developercommerce guided searchcommunications cloud native core service communication proxy+1
quarkus1 product(s)
quarkus
Source: NVD CPE · 27 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories
All References (127)
Quick Facts
CVE IDCVE-2020-13956
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected4 vendor(s)
PublishedDec 2, 2020
Related CVEs (NVD-CWE-noinfo)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-13956 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.