Incorrect authorization in Async-http-client - #VU152423
Published: September 28, 2026
Vulnerability identifier: #VU152423
CSH Severity: Medium
CVSS v4: 9.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to access services as a different authenticated identity.
The vulnerability exists due to incorrect authorization in HTTP connection pool key generation when reusing authenticated origin or proxy connections for requests under different identities. A remote attacker can send a request that reuses a pooled connection authenticated as another identity to access services as a different authenticated identity.
The issue applies to NTLM, Kerberos, and SPNEGO authentication to origins or proxies, as well as SOCKS or CONNECT proxy logins.
Affected software
Async-http-client
Remediation
Install security update from vendor's website.
Async-http-client - update to 3.0.14