CVE-2026-107282 AsyncHttpClient: Replay to a different host sends the original host request and credentials to the new host
Attackers can intercept sensitive credentials and request data when cross-host replays incorrectly target the original host's context, affecting Java applications using AsyncHttpClient.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-107282?
CVE-2026-107282 is a critical vulnerability in AsyncHttpClient async-http-client, published on 7 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-107282?
4 open source packages ship an affected version, including org.asynchttpclient:async-http-client.
| Package | Affected | Fixed in |
|---|---|---|
org.asynchttpclient:async-http-client Maven | From 2.0.0 | 2.16.1 |
org.asynchttpclient:async-http-client Maven | From 2.0.0 | 2.16.1 |
org.asynchttpclient:async-http-client Maven | From 3.0.0 | 3.0.13 |
org.asynchttpclient:async-http-client Maven | From 3.0.0 | 3.0.13 |
How do I fix CVE-2026-107282?
Upgrade org.asynchttpclient:async-http-client to a fixed version for your release line: 2.16.1 or 3.0.13.
Is CVE-2026-107282 being exploited?
There is no known exploitation of CVE-2026-107282 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-107282, ECHO-6e4c-a2b2-3885, GHSA-jmqq-x5g9-9p2w, MINI-7cgc-w56m-2ww4, MINI-rg5m-vgf5-8gg5, MINI-wmh2-w729-gc6h and 3 more.