Bug 2547727 (CVE-2026-107230)

Summary: CVE-2026-107230 org.asynchttpclient/async-http-client: async-http-client: Information disclosure via improper connection pool partitioning
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: gmalinko, janstey, pdelbell, rstepani
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in AsyncHttpClient. This flaw can lead to information disclosure and privilege escalation when handling authenticated connections. The library omits user identity details when partitioning its connection pool for authentication protocols such as Kerberos and NTLM. As a result, a remote attacker can issue requests that reuse an active connection established by a different user, executing actions under that user's identity and exposing sensitive data.
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Description OSIDB Bzimport 2026-10-07 21:32:08 UTC 
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. From 2.0.0 until 3.0.14, connection-pool partitioning still omits identity-defining fields for Kerberos, SPNEGO, NTLM, and authenticated proxy connections. Logins without a configured principal, proxy realms, identities sharing a user name, and SOCKS or CONNECT proxy logins can reuse a socket authenticated as a different identity. A later request is then executed under the first identity and can expose that identity's data or authority to another caller. In the affected execution path, SpnegoEngine, NTLM, Kerberos, SPNEGO, SOCKS, and CONNECT control or expose the vulnerable behavior. This issue is fixed in version 3.0.14.