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CVE-2026-107229— AsyncHttpClient: Incomplete origin checks in the default cookie store allow cookie tossing onto public-suffix and IP-address hosts

Quick assessment

Affected
AsyncHttpClient async-http-client
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AsyncHttpClient（AHC）库允许 Java 应用程序轻松地执行 HTTP 请求并异步处理 HTTP 响应。在版本 2.16.0 至 3.0.14 之间，ThreadSafeCookieStore 对 Cookie 的 Domain 属性进行了不完整的验证。由于缺少对私有段和默认公共后缀规则的验证、缺少 A-label（ASCII 可表示标签）标准化、缺乏基于区域设置的统一小写处理、未正确处理公共后缀的 host-only 情形，以及未对主机名进行数值或 IP 地址检查，导致某个源（origin）存储的

CVSS 4.0 · Medium

Possible ATT&CK Techniques 1 AI

T1195.002 · Compromise Software Supply Chain
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I. Basic Information for CVE-2026-107229

Vulnerability Information
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Vulnerability Title
AsyncHttpClient: Incomplete origin checks in the default cookie store allow cookie tossing onto public-suffix and IP-address hosts
Source: CVE Program / CVE List V5
Vulnerability Description
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. From 2.16.0 until 3.0.14, ThreadSafeCookieStore incompletely validates cookie Domain attributes. Missing private-section and default public-suffix rules, absent A-label normalization, locale-sensitive lowercasing, public-suffix host-only handling, and numeric or IP host checks allow one origin to store a cookie later sent to another origin. Applications sharing one client across trust domains can therefore receive attacker-injected cookies and may be exposed to session fixation. This issue is fixed in version 3.0.14.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
会话固定
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
AsyncHttpClient async-http-client >= 3.0.11, < 3.0.14 -

II. Public POCs for CVE-2026-107229

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III. Intelligence Information for CVE-2026-107229

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Other References for CVE-2026-107229 (3)

Same Patch Batch · AsyncHttpClient · 2026-10-07 · 13 CVEs total

CVE-2026-107282 9.4 CRITICAL AsyncHttpClient: Replay to a different host sends the original host request and credential
CVE-2026-107279 8.8 HIGH AsyncHttpClient: Digest mutual authentication is switched off by a peer offering qop=auth-
CVE-2026-107231 8.7 HIGH AsyncHttpClient: Digest challenge without a usable nonce downgrades to Basic and sends the
CVE-2026-107281 7.6 HIGH AsyncHttpClient: Connection pool key omits the authenticated principal, so an NTLM or Nego
CVE-2026-107227 7.5 HIGH AsyncHttpClient: Unbounded WebSocket permessage-deflate decompression enables a decompress
CVE-2026-107232 7.5 HIGH AsyncHttpClient: Origin credentials sent in cleartext to a proxy that rejects the CONNECT
CVE-2026-107230 7.4 HIGH AsyncHttpClient: Pooled connections can still be shared across NTLM, Negotiate and proxy l
CVE-2026-107280 6.9 MEDIUM AsyncHttpClient: Cookie Domain attribute is not checked against the public suffix list, so
CVE-2026-107228 6.8 MEDIUM AsyncHttpClient CookieStore Silently Overrides Caller's Explicit Cookie Header via setHead
CVE-2026-107285 5.9 MEDIUM AsyncHttpClient: WebSocket proxy credentials sent to the origin server over a CONNECT tunn
CVE-2026-107284 3.7 LOW AsyncHttpClient: WebSocket handshake continues after a failed Sec-WebSocket-Accept check
CVE-2026-107283 3.7 LOW AsyncHttpClient: Digest authentication cnonce generated with a non-cryptographic random so

IV. Related Vulnerabilities

Same product: async-http-client
Same vendor: AsyncHttpClient
Same weakness: CWE-384

V. Comments for CVE-2026-107229

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