CVE-2026-107285 · GHSA-3wp9-xfwm-rjjf
AsyncHttpClient: WebSocket proxy credentials sent to the origin server over a CONNECT tunnel
- Risk score
- 42/100
- CVSS
- 5.9 v3.1
- Exploit chance (30 days)
- 0.2%
- Published
- 7 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.12 and 2.16.1, a proxied ws request is carried through CONNECT, but NettyRequestFactory.newNettyRequest and requestUri decide whether to attach proxy authentication and an …
- Affected
- org.asynchttpclient:async-http-client (maven) >= 3.0.0, <= 3.0.11; org.asynchttpclient:async-http-client (maven) >= 2.0.0, <= 2.16.0
- Fix
- Upgrade org.asynchttpclient:async-http-client to 3.0.12 or 2.16.1 (whichever matches your release line) or later.
- Exploitation
- No known exploitation
Story map
At a glance
org.asynchttpclient:async-http-client: Amber, patch this week. 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-poo…
The flaws
- CVE-2026-107285: AsyncHttpClient: WebSocket proxy credentials sent to the origin server over a CONNECT tunnel (CVSS 5.9 · EPSS 0%)
- CVE-2026-107282: AsyncHttpClient: Replay to a different host sends the original host request and credentials to the new host (CVSS 9.4 · EPSS 0%)
- CVE-2026-107231: AsyncHttpClient: Digest challenge without a usable nonce downgrades to Basic and sends the password in cleartext (CVSS 8.7 · EPSS 0%)
- CVE-2026-107227: AsyncHttpClient: Unbounded WebSocket permessage-deflate decompression enables a decompression-bomb denial of service when compression is enabled (CVSS 7.5 · EPSS 0%)
The fix
Upgrade org.asynchttpclient:async-http-client: 3.0.12 · 2.16.1 · 3.0.13 · 3.0.14 or later on your release line
Who is exposed: org.asynchttpclient:async-http-client (maven) >= 3.0.0, <= 3.0.12; org.asynchttpclient:async-http-client (maven) >= 2.0.0, <= 2.16.0
Where it stands
- No known exploitation
Connects to
- Same weakness: CWE-319 (CWE-319). 14 other warnings in 30 days
Why it is Yellow
- CVSS 5.9 medium
- On your watchlist: Maven
Affected packages
| Package | Ecosystem | Vulnerable | Fixed in |
|---|---|---|---|
| org.asynchttpclient:async-http-client | maven | >= 3.0.0, <= 3.0.11 | 3.0.12 |
| org.asynchttpclient:async-http-client | maven | >= 2.0.0, <= 2.16.0 | 2.16.1 |
References
- https://github.com/advisories/GHSA-3wp9-xfwm-rjjf
- https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-3wp9-xfwm-rjjf
- https://nvd.nist.gov/vuln/detail/CVE-2026-107285
- https://github.com/AsyncHttpClient/async-http-client/commit/6e9cb75a9b7259353f983fc90ca28b1da3742e18
- https://github.com/AsyncHttpClient/async-http-client/commit/c4feab0f7f86d61505a48e40d383c8a375a22e18
- https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.16.1
- https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.12
- https://github.com/advisories/GHSA-3wp9-xfwm-rjjf
Original description
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.12 and 2.16.1, a proxied ws request is carried through CONNECT, but NettyRequestFactory.newNettyRequest and requestUri decide whether to attach proxy authentication and an absolute-form target only from whether the URI is secure. Because ws is not marked secure, the tunneled WebSocket upgrade sent to the origin includes the proxy's Proxy-Authorization value. Basic credentials are directly recoverable and Digest responses can be replayed or cracked offline. This issue is fixed in versions 3.0.12 and 2.16.1.
Last activity 7 Oct 2026. Patch Forecast updates every hour.