UBUNTU-CVE-2026-97687

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Source
https://ubuntu.com/security/CVE-2026-97687
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-97687
Upstream
Published
2026-09-29T16:17:00Z
Modified
2026-10-01T00:22:47Z
Severity
  • 7.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

urllib3 is an HTTP client library for Python. From 1.26.0 until 2.8.0, the proxy_ssl_context, proxy_assert_hostname, proxy_assert_fingerprint, ssl_context, cert_reqs, verify_mode, use_forwarding_for_https=True, and CERT_NONE configuration paths fail to remain separated because target-server TLS settings are incorrectly applied to the HTTPS proxy connection. The trigger is that an application uses an HTTPS proxy and configures target-server TLS settings that must remain separate from the proxy TLS handshake, including HTTPS forwarding with target-specific identity or credentials. Applying cert_reqs=CERT_NONE can overwrite proxy_ssl_context.verify_mode in place, and the mutation persists so later connections reusing the same context may connect to the HTTPS proxy without certificate verification. The attack mechanism is that an attacker intercepts and impersonates the HTTPS proxy after the effective proxy policy accepts the attacker's certificate. The impact is that the attacker can observe or modify forwarded traffic or receive a target TLS client certificate, while CONNECT tunneling still preserves the separate end-to-end target TLS connection. This issue is fixed in version 2.8.0.

References

Affected packages

Ubuntu:22.04:LTS
python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.26.5-1~exp1
1.26.5-1~exp1ubuntu0.1
1.26.5-1~exp1ubuntu0.2
1.26.5-1~exp1ubuntu0.3
1.26.5-1~exp1ubuntu0.4
1.26.5-1~exp1ubuntu0.5
1.26.5-1~exp1ubuntu0.6
1.26.5-1~exp1ubuntu0.7

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-urllib3",
            "binary_version":  "1.26.5-1~exp1ubuntu0.7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json"
Ubuntu:24.04:LTS
python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.26.16-1
1.26.18-1
2.*
2.0.7-1
2.0.7-1ubuntu0.1
2.0.7-1ubuntu0.2
2.0.7-1ubuntu0.3
2.0.7-1ubuntu0.4
2.0.7-1ubuntu0.5
2.0.7-1ubuntu0.6
2.0.7-1ubuntu0.7

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-urllib3",
            "binary_version":  "2.0.7-1ubuntu0.7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json"
Ubuntu:26.04:LTS
python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3?arch=source&distro=resolute

Affected ranges

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

Affected versions

2.*
2.3.0-3
2.5.0-1
2.5.0-1ubuntu1
2.5.0-1ubuntu2
2.6.3-1ubuntu1
2.6.3-1ubuntu1.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-urllib3",
            "binary_version":  "2.6.3-1ubuntu1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json"
Ubuntu:Pro:14.04:LTS
python-pip

Package

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

Affected ranges

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

Affected versions

1.*
1.4.1-2
1.5.4-1
1.5.4-1ubuntu1
1.5.4-1ubuntu3
1.5.4-1ubuntu4
1.5.4-1ubuntu4+esm1
1.5.4-1ubuntu4+esm2
1.5.4-1ubuntu4+esm3
1.5.4-1ubuntu4+esm4
1.5.4-1ubuntu4+esm5

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python-pip",
            "binary_version":  "1.5.4-1ubuntu4+esm5"
        },
        {
            "binary_name":  "python-pip-whl",
            "binary_version":  "1.5.4-1ubuntu4+esm5"
        },
        {
            "binary_name":  "python3-pip",
            "binary_version":  "1.5.4-1ubuntu4+esm5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json"
python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

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

Affected versions

1.*
1.6-2
1.7.1-1
1.7.1-1build1
1.7.1-1ubuntu0.1
1.7.1-1ubuntu3
1.7.1-1ubuntu4
1.7.1-1ubuntu4.1
1.7.1-1ubuntu4.1+esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python-urllib3",
            "binary_version":  "1.7.1-1ubuntu4.1+esm1"
        },
        {
            "binary_name":  "python-urllib3-whl",
            "binary_version":  "1.7.1-1ubuntu4.1+esm1"
        },
        {
            "binary_name":  "python3-urllib3",
            "binary_version":  "1.7.1-1ubuntu4.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json"
Ubuntu:Pro:16.04:LTS
python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3?arch=source&distro=esm-infra-legacy%2Fxenial

Affected ranges

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

Affected versions

1.*
1.11-1
1.12-1
1.13.1-1
1.13.1-2
1.13.1-2ubuntu0.16.04.1
1.13.1-2ubuntu0.16.04.2
1.13.1-2ubuntu0.16.04.3
1.13.1-2ubuntu0.16.04.4
1.13.1-2ubuntu0.16.04.4+esm1
1.13.1-2ubuntu0.16.04.4+esm2
1.13.1-2ubuntu0.16.04.4+esm3
1.13.1-2ubuntu0.16.04.4+esm4

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python-urllib3",
            "binary_version":  "1.13.1-2ubuntu0.16.04.4+esm4"
        },
        {
            "binary_name":  "python3-urllib3",
            "binary_version":  "1.13.1-2ubuntu0.16.04.4+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json"
python-pip

Package

Name
python-pip
Purl
pkg:deb/ubuntu/python-pip?arch=source&distro=esm-apps%2Fxenial

Affected ranges

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

Affected versions

1.*
1.5.6-7ubuntu1
1.5.6-7ubuntu2
8.*
8.0.2-7
8.0.3-1
8.0.3-2
8.1.0-1
8.1.0-2
8.1.1-1
8.1.1-2
8.1.1-2ubuntu0.1
8.1.1-2ubuntu0.2
8.1.1-2ubuntu0.4
8.1.1-2ubuntu0.6
8.1.1-2ubuntu0.6+esm2
8.1.1-2ubuntu0.6+esm3
8.1.1-2ubuntu0.6+esm4
8.1.1-2ubuntu0.6+esm5
8.1.1-2ubuntu0.6+esm6
8.1.1-2ubuntu0.6+esm8
8.1.1-2ubuntu0.6+esm10
8.1.1-2ubuntu0.6+esm11
8.1.1-2ubuntu0.6+esm12

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python-pip",
            "binary_version":  "8.1.1-2ubuntu0.6+esm12"
        },
        {
            "binary_name":  "python-pip-whl",
            "binary_version":  "8.1.1-2ubuntu0.6+esm12"
        },
        {
            "binary_name":  "python3-pip",
            "binary_version":  "8.1.1-2ubuntu0.6+esm12"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json"
Ubuntu:Pro:18.04:LTS
python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3?arch=source&distro=esm-infra%2Fbionic

Affected ranges

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

Affected versions

1.*
1.21.1-1
1.22-1
1.22-1ubuntu0.18.04.1
1.22-1ubuntu0.18.04.2
1.22-1ubuntu0.18.04.2+esm1
1.22-1ubuntu0.18.04.2+esm2
1.22-1ubuntu0.18.04.2+esm3
1.22-1ubuntu0.18.04.2+esm4

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python-urllib3",
            "binary_version":  "1.22-1ubuntu0.18.04.2+esm4"
        },
        {
            "binary_name":  "python3-urllib3",
            "binary_version":  "1.22-1ubuntu0.18.04.2+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json"
python-pip

Package

Name
python-pip
Purl
pkg:deb/ubuntu/python-pip?arch=source&distro=esm-apps%2Fbionic

Affected ranges

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

Affected versions

9.*
9.0.1-2
9.0.1-2.3~ubuntu1
9.0.1-2.3~ubuntu1.18.04.1
9.0.1-2.3~ubuntu1.18.04.2
9.0.1-2.3~ubuntu1.18.04.3
9.0.1-2.3~ubuntu1.18.04.4
9.0.1-2.3~ubuntu1.18.04.5
9.0.1-2.3~ubuntu1.18.04.5+esm2
9.0.1-2.3~ubuntu1.18.04.5+esm3
9.0.1-2.3~ubuntu1.18.04.6
9.0.1-2.3~ubuntu1.18.04.6+esm1
9.0.1-2.3~ubuntu1.18.04.7
9.0.1-2.3~ubuntu1.18.04.7+esm1
9.0.1-2.3~ubuntu1.18.04.8
9.0.1-2.3~ubuntu1.18.04.8+esm1
9.0.1-2.3~ubuntu1.18.04.8+esm2
9.0.1-2.3~ubuntu1.18.04.8+esm4
9.0.1-2.3~ubuntu1.18.04.8+esm6
9.0.1-2.3~ubuntu1.18.04.8+esm7
9.0.1-2.3~ubuntu1.18.04.8+esm8

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python-pip",
            "binary_version":  "9.0.1-2.3~ubuntu1.18.04.8+esm8"
        },
        {
            "binary_name":  "python-pip-whl",
            "binary_version":  "9.0.1-2.3~ubuntu1.18.04.8+esm8"
        },
        {
            "binary_name":  "python3-pip",
            "binary_version":  "9.0.1-2.3~ubuntu1.18.04.8+esm8"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json"
Ubuntu:Pro:20.04:LTS
python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3?arch=source&distro=esm-infra%2Ffocal

Affected ranges

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

Affected versions

1.*
1.24.1-1ubuntu1
1.24.1-1ubuntu2
1.25.8-1
1.25.8-2
1.25.8-2ubuntu0.1
1.25.8-2ubuntu0.2
1.25.8-2ubuntu0.3
1.25.8-2ubuntu0.4
1.25.8-2ubuntu0.4+esm1
1.25.8-2ubuntu0.4+esm2
1.25.8-2ubuntu0.4+esm3
1.25.8-2ubuntu0.4+esm4
1.25.8-2ubuntu0.4+esm5

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-urllib3",
            "binary_version":  "1.25.8-2ubuntu0.4+esm5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json"
python-pip

Package

Name
python-pip
Purl
pkg:deb/ubuntu/python-pip?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

18.*
18.1-5
18.1-5build1
18.1-5ubuntu1
20.*
20.0.2-2
20.0.2-4
20.0.2-5
20.0.2-5ubuntu1
20.0.2-5ubuntu1.1
20.0.2-5ubuntu1.3
20.0.2-5ubuntu1.4
20.0.2-5ubuntu1.5
20.0.2-5ubuntu1.6
20.0.2-5ubuntu1.7
20.0.2-5ubuntu1.8
20.0.2-5ubuntu1.9
20.0.2-5ubuntu1.10
20.0.2-5ubuntu1.10+esm2
20.0.2-5ubuntu1.11
20.0.2-5ubuntu1.11+esm2
20.0.2-5ubuntu1.11+esm3
20.0.2-5ubuntu1.11+esm4

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python-pip-whl",
            "binary_version":  "20.0.2-5ubuntu1.11+esm4"
        },
        {
            "binary_name":  "python3-pip",
            "binary_version":  "20.0.2-5ubuntu1.11+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json"
Ubuntu:Pro:22.04:LTS
python-pip

Package

Name
python-pip
Purl
pkg:deb/ubuntu/python-pip?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

20.*
20.3.4-4
21.*
21.3.1+dfsg-3
22.*
22.0.2+dfsg-1
22.0.2+dfsg-1ubuntu0.1
22.0.2+dfsg-1ubuntu0.2
22.0.2+dfsg-1ubuntu0.3
22.0.2+dfsg-1ubuntu0.4
22.0.2+dfsg-1ubuntu0.5
22.0.2+dfsg-1ubuntu0.6
22.0.2+dfsg-1ubuntu0.7
22.0.2+dfsg-1ubuntu0.7+esm1
22.0.2+dfsg-1ubuntu0.7+esm2
22.0.2+dfsg-1ubuntu0.7+esm3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-pip",
            "binary_version":  "22.0.2+dfsg-1ubuntu0.7+esm3"
        },
        {
            "binary_name":  "python3-pip-whl",
            "binary_version":  "22.0.2+dfsg-1ubuntu0.7+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json"
Ubuntu:Pro:24.04:LTS
python-pip

Package

Name
python-pip
Purl
pkg:deb/ubuntu/python-pip?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

23.*
23.2+dfsg-1
23.3+dfsg-1
24.*
24.0+dfsg-1
24.0+dfsg-1ubuntu1
24.0+dfsg-1ubuntu1.1
24.0+dfsg-1ubuntu1.2
24.0+dfsg-1ubuntu1.3
24.0+dfsg-1ubuntu1.3+esm1
24.0+dfsg-1ubuntu1.3+esm2
24.0+dfsg-1ubuntu1.3+esm3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-pip",
            "binary_version":  "24.0+dfsg-1ubuntu1.3+esm3"
        },
        {
            "binary_name":  "python3-pip-whl",
            "binary_version":  "24.0+dfsg-1ubuntu1.3+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json"
Ubuntu:Pro:26.04:LTS
python-pip

Package

Name
python-pip
Purl
pkg:deb/ubuntu/python-pip?arch=source&distro=esm-apps%2Fresolute

Affected ranges

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

Affected versions

25.*
25.1.1+dfsg-1ubuntu2
25.1.1+dfsg-1ubuntu2+esm1
25.1.1+dfsg-1ubuntu2+esm2
25.1.1+dfsg-1ubuntu2+esm3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-pip",
            "binary_version":  "25.1.1+dfsg-1ubuntu2+esm3"
        },
        {
            "binary_name":  "python3-pip-whl",
            "binary_version":  "25.1.1+dfsg-1ubuntu2+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97687.json"