CVE-2017-14063

HIGH

async-http-client < 2.0.35 - Server-Side Request Forgery via Fragment Identifier

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2017-14063. PoCs published by dawetmaster, andikahilmy.

AI-analyzed exploit summary This repository contains the source code of the async-http-client library, which is vulnerable to CVE-2017-14063, but does not include any exploit code or proof-of-concept. It appears to be a snapshot of the vulnerable version of the library.

Description

Async Http Client (aka async-http-client) before 2.0.35 can be tricked into connecting to a host different from the one extracted by java.net.URI if a '?' character occurs in a fragment identifier. Similar bugs were previously identified in cURL (CVE-2016-8624) and Oracle Java 8 java.net.URL.

Exploits (2)

nomisec STUB
by dawetmaster · poc
https://github.com/dawetmaster/CVE-2017-14063-async-http-client-vulnerable

This repository contains the source code of the async-http-client library, which is vulnerable to CVE-2017-14063, but does not include any exploit code or proof-of-concept. It appears to be a snapshot of the vulnerable version of the library.

Classification
Stub 90%
Attack Type
Other
Complexity
Trivial
Reliability
Theoretical
Target: async-http-client (version not specified)
No auth needed
Prerequisites: None
devstral-2 · analyzed Mar 14, 2026 Full analysis →
nomisec WORKING POC
by andikahilmy · poc
https://github.com/andikahilmy/CVE-2017-14063-async-http-client-vulnerable

This repository contains a vulnerable version of the async-http-client library, specifically targeting CVE-2017-14063. The codebase includes the full implementation of the library, which can be used to demonstrate the vulnerability in a controlled environment.

Classification
Working Poc 90%
Attack Type
Other
Complexity
Moderate
Reliability
Reliable
Target: async-http-client (versions prior to fix for CVE-2017-14063)
No auth needed
Prerequisites: Java environment · Dependency on vulnerable async-http-client version
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (28)

Core 28
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://github.com/AsyncHttpClient/async-http-client/issues/1455
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:2669
Mailing List, Patch, Third Party Advisory x_refsource_misc
http://openwall.com/lists/oss-security/2017/08/31/4

Scores

CVSS v3 7.5
EPSS 0.0283
EPSS Percentile 86.5%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

CWE
CWE-20
Status published
Products (2)
asynchttpclient_project/async-http-client < 2.0.35
org.asynchttpclient/async-http-client 0 - 2.0.35Maven
Published Aug 31, 2017
Tracked Since Feb 18, 2026