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High

Improper Input Validation in async-http-client

  • Disclosed: 19.10.2018
  • Updated: 11.10.2026 12:21

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.

Affected software

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PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) org.asynchttpclient:async-http-client < 2.0.35 2.0.35

References

CVSS score 7.5/10
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE)
CWE-20
Platform
Java / Kotlin (Maven)
Package
org.asynchttpclient:async-http-client
Disclosed
19.10.2018
Updated
11.10.2026 12:21

Sources and licenses

OSV / GitHub Advisory Database - GHSA-93jq-624g-4p9p - CC BY 4.0

Vulnerability history: org.asynchttpclient:async-http-client

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (18) in the archive
Total entries
18
First → latest
10.2018 10.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 2
  • High 6
  • Medium 8
  • Low 2

Disclosures per year

Severity:
  1. AsyncHttpClient: Unbounded WebSocket permessage-deflate decompression enables a decompression-bomb denial of service when compression is enabled
    High · 7.5 CVE-2026-107227 >= 3.0.0, < 3.0.14, >= 2.2.0, <= 2.16.1 3.0.14
  2. AsyncHttpClient: Pooled connections can still be shared across NTLM, Negotiate and proxy logins
    High · 7.4 CVE-2026-107230 >= 3.0.0, < 3.0.14, >= 2.0.0, <= 2.16.1 3.0.14
  3. AsyncHttpClient: Replay to a different host sends the original host request and credentials to the new host
    Critical CVE-2026-107282 >= 3.0.0, < 3.0.13, >= 2.0.0, < 2.16.1 3.0.13, 2.16.1
  4. AsyncHttpClient: Digest challenge without a usable nonce downgrades to Basic and sends the password in cleartext
    High CVE-2026-107231 >= 3.0.0.Beta1, < 3.0.13, >= 2.0.0, < 2.16.1 3.0.13, 2.16.1
  5. AsyncHttpClient's unbounded HTTP/1.1 response decompression enables a decompression-bomb denial of service
    High · 7.5 CVE-2026-85721 >= 3.0.0, < 3.0.12, >= 2.0.0, < 2.16.1 3.0.12, 2.16.1
  6. async-http-client: Cookie header not stripped on cross-origin redirect
    High · 7.4 CVE-2026-45300 >= 3.0.0.Beta1, < 3.0.10, >= 2.0.0, < 2.15.0 3.0.10, 2.15.0
  7. AsyncHttpClient (AHC) library's `CookieStore` replaces explicitly defined `Cookie`s
    Critical CVE-2024-53990 >= 2.1.0, < 2.12.4, >= 3.0.0.Beta1, < 3.0.1 2.12.4, 3.0.1
  8. Improper Input Validation in async-http-client this entry
    High · 7.5 CVE-2017-14063 < 2.0.35 2.0.35

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