UBUNTU-CVE-2026-55688

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Source
https://ubuntu.com/security/CVE-2026-55688
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55688.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-55688
Upstream
Published
2026-07-02T00:00:00Z
Modified
2026-07-02T18:03:22.323354104Z
Severity
  • 4.0 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. In versions from 2.0.0 prior to 2.16.0 and from 3.0.0.Beta1 prior to 3.0.11, ThreadSafeCookieStore stored a cookie under the value of its Domain attribute without verifying that the responding host is allowed to set a cookie for that domain, leading to a cookie tossing / cookie injection issue. A host the client connects to can therefore plant a cookie scoped to an unrelated domain, and the client will then send that cookie on later requests to that domain. Applications that use a single AsyncHttpClient instance - and thus the default, shared CookieStore - to reach both an attacker-influenced host and a trusted host are impacted. This issue has been fixed in versions 2.16.0 and 3.0.11.

References

Affected packages

Ubuntu:16.04:LTS
async-http-client

Package

Name
async-http-client
Purl
pkg:deb/ubuntu/async-http-client?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.6.5-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libasync-http-client-java",
            "binary_version": "1.6.5-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55688.json"
Ubuntu:18.04:LTS
async-http-client

Package

Name
async-http-client
Purl
pkg:deb/ubuntu/async-http-client?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.6.5-4
1.6.5-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libasync-http-client-java",
            "binary_version": "1.6.5-5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55688.json"
Ubuntu:20.04:LTS
async-http-client

Package

Name
async-http-client
Purl
pkg:deb/ubuntu/async-http-client?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.6.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libasync-http-client-java",
            "binary_version": "2.6.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55688.json"
Ubuntu:22.04:LTS
async-http-client

Package

Name
async-http-client
Purl
pkg:deb/ubuntu/async-http-client?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.12.2-1
2.12.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libasync-http-client-java",
            "binary_version": "2.12.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55688.json"
Ubuntu:24.04:LTS
async-http-client

Package

Name
async-http-client
Purl
pkg:deb/ubuntu/async-http-client?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.12.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libasync-http-client-java",
            "binary_version": "2.12.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55688.json"
Ubuntu:25.10
async-http-client

Package

Name
async-http-client
Purl
pkg:deb/ubuntu/async-http-client?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.12.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libasync-http-client-java",
            "binary_version": "2.12.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55688.json"
Ubuntu:26.04:LTS
async-http-client

Package

Name
async-http-client
Purl
pkg:deb/ubuntu/async-http-client?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.12.3-1
2.12.3-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libasync-http-client-java",
            "binary_version": "2.12.3-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55688.json"
Ubuntu:Pro:14.04:LTS
async-http-client

Package

Name
async-http-client
Purl
pkg:deb/ubuntu/async-http-client?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.6.5-1
1.6.5-2
1.6.5-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libasync-http-client-java",
            "binary_version": "1.6.5-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55688.json"