USN-7503-1

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Source
https://ubuntu.com/security/notices/USN-7503-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7503-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-7503-1
Upstream
Related
Published
2025-05-08T10:53:58.113770Z
Modified
2025-10-13T04:41:08Z
Summary
python-h11 vulnerability
Details

Jeppe Bonde Weikop discovered that h11 incorrectly handled crafted HTTP requests. A remote attacker could possibly use this issue to smuggle malicious HTTP requests, which could potentially lead to security control bypass and information leakage.

References

Affected packages

Ubuntu:24.04:LTS / python-h11

Package

Name
python-h11
Purl
pkg:deb/ubuntu/python-h11@0.14.0-1ubuntu0.24.04.1?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.14.0-1ubuntu0.24.04.1

Affected versions

0.*

0.14.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.14.0-1ubuntu0.24.04.1",
            "binary_name": "python3-h11"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2025-43859"
        }
    ]
}

Ubuntu:25.04 / python-h11

Package

Name
python-h11
Purl
pkg:deb/ubuntu/python-h11@0.14.0-1ubuntu0.25.04.1?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.14.0-1ubuntu0.25.04.1

Affected versions

0.*

0.14.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.14.0-1ubuntu0.25.04.1",
            "binary_name": "python3-h11"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:25.04",
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2025-43859"
        }
    ]
}