---
title: "CVE-2026-107232: AsyncHttpClient - Authentication Bypass"
description: "AsyncHttpClient < 3.0.12 (3.x) and < 2.16.1 (2.x) contains an information disclosure caused by improper handling of proxy CONNECT rejection, letting attackers recover or relay credentials over plaintext proxy connections, exploit requires use of HTTP proxy with CONNECT rejection."
url: https://panop.io/threat-heartbeat/CVE-2026-107232/
---

# CVE-2026-107232 AsyncHttpClient - Authentication Bypass

AsyncHttpClient < 3.0.12 (3.x) and < 2.16.1 (2.x) contains an information disclosure caused by improper handling of proxy CONNECT rejection, letting attackers recover or relay credentials over plaintext proxy connections, exploit requires use of HTTP proxy with CONNECT rejection.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.21% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-107232)

## Details

Type

Authentication Bypass

Impact

Information Disclosure

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Published

7 October 2026

Updated

15 October 2026

Weakness

[CWE-319](https://cwe.mitre.org/data/definitions/319.html)

## Vendor fix

Update to versions 3.0.12 or 2.16.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-107232](https://nvd.nist.gov/vuln/detail/CVE-2026-107232)
- [https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-v9f2-7rw2-gr2x](https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-v9f2-7rw2-gr2x)
- [https://github.com/AsyncHttpClient/async-http-client/commit/3a625cb892233c0a6653ac68823a25ffbc80f393](https://github.com/AsyncHttpClient/async-http-client/commit/3a625cb892233c0a6653ac68823a25ffbc80f393)
- [https://github.com/AsyncHttpClient/async-http-client/commit/a87e7b8c81a6f66a4ce23cd43097fbadd1c788ea](https://github.com/AsyncHttpClient/async-http-client/commit/a87e7b8c81a6f66a4ce23cd43097fbadd1c788ea)
- [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-2.16.1)
- [https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.12](https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.12)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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