Critical severity · published Oct 7, 2026
CVE-2026-107282
AsyncHttpClient: Replay to a different host sends the original host request and credentials to the new host
9.4
CVSS
0.2%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
async-http-client · AsyncHttpClient
>= 3.0.0, < 3.0.13; >= 2.0.0, < 2.16.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-107282
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-107282
x_refsource_CONFIRM
https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-jmqq-x5g9-9p2w
x_refsource_MISC
https://github.com/AsyncHttpClient/async-http-client/commit/15b254514a411623e5f1d8c99ea79c0f82f8a466
x_refsource_MISC
https://github.com/AsyncHttpClient/async-http-client/commit/bbc31aed3b044f9f7a126cf689a8c8d7ad2ae1cb
x_refsource_MISC
https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.16.1
x_refsource_MISC
https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.13
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