GHSA-xr57-gcx8-52hf

Source

https://github.com/advisories/GHSA-xr57-gcx8-52hf

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-xr57-gcx8-52hf/GHSA-xr57-gcx8-52hf.json

JSON Data

https://api.test.osv.dev/v1/vulns/GHSA-xr57-gcx8-52hf

Aliases

CVE-2026-85720

Downstream

CGA (16)

MINI (1)

MINI-pw44-32pc-88qr

Published

2026-09-17T17:19:12Z

Modified

2026-09-17T17:30:05Z

Severity

5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator

Summary

AsyncHttpClient sends origin credentials to the proxy on the plaintext CONNECT request

Details

Impact

When a request uses an HTTP proxy to reach an HTTPS origin, the client opens the tunnel with a plaintext CONNECT sent to the proxy before any TLS exists. On affected versions the origin's preemptive credentials were added to that CONNECT. A Basic realm sent Authorization: Basic base64(user:pass) to the proxy in the clear, and NTLM, SPNEGO or Kerberos realms sent their token. The proxy, and anyone who can read the client to proxy hop, saw credentials that were meant only for the origin.

Affected versions

3.x: up to and including 3.0.11
2.x: up to and including 2.16.0

Patches

Fixed in 3.0.12 on the 3.x line and in 2.16.1 on the 2.x line. The origin Basic or Digest Authorization is no longer put on the CONNECT; it is added to the tunnelled request once the tunnel is up. The per-connection NTLM, Kerberos and SPNEGO token is likewise no longer attached on the tunnel path; it never reached the origin there in any case, and the challenge flow still negotiates it inside the tunnel.

Workarounds

Do not use preemptive origin authentication together with an HTTP proxy, or reach the origin without a CONNECT proxy.

Details

NettyRequestFactory added the origin Authorization to every request it built, including the CONNECT, and NettyRequestSender did the same for the per-connection NTLM or SPNEGO token in sendRequestWithNewChannel. Both now skip the CONNECT.

Note that 3.0.12 is itself affected by a separate issue, GHSA-rqf5-2wxv-rjf4, where a Digest challenge the client cannot read downgrades to Basic and sends the password in cleartext. Upgrade to 3.0.13 to pick up both fixes.

Database specific

{
    "cwe_ids":  [
        "CWE-319",
        "CWE-522"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-09-17T17:19:12Z",
    "nvd_published_at":  null,
    "severity":  "MODERATE"
}

References

Affected packages

Maven / org.asynchttpclient:async-http-client

Package

Name: org.asynchttpclient:async-http-client; View open source insights on deps.dev
Purl: pkg:maven/org.asynchttpclient/async-http-client

Affected ranges

Type: ECOSYSTEM
Events: Introduced

3.0.0

Fixed

3.0.12

Affected versions

3.*

3.0.0

3.0.1

3.0.2

3.0.3

3.0.4

3.0.5

3.0.6

3.0.7

3.0.8

3.0.9

3.0.10

3.0.11

Database specific

last_known_affected_version_range

"<= 3.0.11"

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-xr57-gcx8-52hf/GHSA-xr57-gcx8-52hf.json"

Maven / org.asynchttpclient:async-http-client

Package

Name: org.asynchttpclient:async-http-client; View open source insights on deps.dev
Purl: pkg:maven/org.asynchttpclient/async-http-client

Affected ranges

Type: ECOSYSTEM
Events: Introduced

2.0.0

Fixed

2.16.1

Affected versions

2.*

2.0.0

2.0.1

2.0.2

2.0.3

2.0.4

2.0.5

2.0.6

2.0.7

2.0.8

2.0.9

2.0.10

2.0.11

2.0.12

2.0.13

2.0.14

2.0.15

2.0.16

2.0.17

2.0.18

2.0.19

2.0.20

2.0.21

2.0.22

2.0.23

2.0.24

2.0.25

2.0.26

2.0.27

2.0.28

2.0.29

2.0.30

2.0.31

2.0.32

2.0.33

2.0.34

2.0.35

2.0.36

2.0.37

2.0.38

2.0.39

2.0.40

2.1.0-alpha1

2.1.0-alpha2

2.1.0-alpha3

2.1.0-alpha4

2.1.0-alpha5

2.1.0-alpha6

2.1.0-alpha7

2.1.0-alpha8

2.1.0-alpha9

2.1.0-alpha10

2.1.0-alpha11

2.1.0-alpha12

2.1.0-alpha13

2.1.0-alpha14

2.1.0-alpha15

2.1.0-alpha16

2.1.0-alpha17

2.1.0-alpha18

2.1.0-alpha19

2.1.0-alpha20

2.1.0-alpha21

2.1.0-alpha22

2.1.0-alpha23

2.1.0-alpha24

2.1.0-alpha25

2.1.0-alpha26

2.1.0-RC1

2.1.0-RC2

2.1.0-RC3

2.1.0-RC4

2.1.0

2.1.1

2.1.2

2.2.0

2.2.1

2.3.0

2.4.0

2.4.1

2.4.2

2.4.3

2.4.4

2.4.5

2.4.6

2.4.7

2.4.8

2.4.9

2.5.0

2.5.1

2.5.2

2.5.3

2.5.4

2.6.0

2.7.0

2.8.0

2.8.1

2.9.0

2.10.0

2.10.1

2.10.2

2.10.3

2.10.4

2.10.5

2.11.0

2.12.0

2.12.1

2.12.2

2.12.3

2.12.4

2.14.5

2.15.0

2.16.0

Database specific

last_known_affected_version_range

"<= 2.16.0"

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-xr57-gcx8-52hf/GHSA-xr57-gcx8-52hf.json"