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CVE-2026-107282— AsyncHttpClient: Replay to a different host sends the original host request and credentials to the new host

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 应用程序轻松执行 HTTP 请求并异步处理 HTTP 响应。在版本 3.0.13 和 2.16.1 之前，跨主机请求重放会更新当前请求，但目标请求及相关代理上下文仍指向原始来源。因此，连接池选择、CONNECT 方法处理、认证域（realm）选择以及 TLS 配置可能会将原始主机路径、Host 头信息、Authorization 凭据或明文请求发送至重放目标。文档中描述的 ResponseFilter 故障转移和重试路径可能触发此类重放行为。该问题已在版本

CVSS 9.4 · Critical

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-107282

Vulnerability Information
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Vulnerability Title
AsyncHttpClient: Replay to a different host sends the original host request and credentials to the new host
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. Prior to 3.0.13 and 2.16.1, cross-host request replay updates the current request but leaves the target request and related proxy context pointing at the original origin. Connection-pool selection, CONNECT handling, realm selection, and TLS setup can consequently send the original host's path, Host header, Authorization credentials, or plaintext request to the replay destination. Documented ResponseFilter failover and retry paths can trigger the replay. This issue is fixed in versions 3.0.13 and 2.16.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据的明文传输
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
AsyncHttpClient async-http-client >= 3.0.0, < 3.0.13 -

II. Public POCs for CVE-2026-107282

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III. Intelligence Information for CVE-2026-107282

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Other References for CVE-2026-107282 (5)

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

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-2026-107229 4.0 MEDIUM AsyncHttpClient: Incomplete origin checks in the default cookie store allow cookie tossing
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-319

V. Comments for CVE-2026-107282

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