Protection mechanism failure in Async-http-client - #VU152426
Published: September 28, 2026
Vulnerability identifier: #VU152426
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-693
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to plant, overwrite, or delete secure cookies.
The vulnerability exists due to improper enforcement of secure cookie protections in ThreadSafeCookieStore when handling Set-Cookie headers received over plaintext HTTP. A remote attacker can respond to a plaintext request with a crafted Set-Cookie header to plant, overwrite, or delete secure cookies.
Affected software
Async-http-client
Remediation
Install security update from vendor's website.
Async-http-client - update to 3.0.14