UBUNTU-CVE-2026-9079

Source
https://ubuntu.com/security/CVE-2026-9079
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9079.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-9079
Upstream
Downstream
Related
Published
2026-06-24T14:00:00Z
Modified
2026-07-09T17:16:51.007510417Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.

References

Affected packages

Ubuntu:25.10 / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.14.1-2ubuntu1.4

Affected versions

8.*
8.12.1-3ubuntu1
8.13.0-5ubuntu1
8.14.1-1ubuntu2
8.14.1-1ubuntu3
8.14.1-2ubuntu1
8.14.1-2ubuntu1.1
8.14.1-2ubuntu1.2
8.14.1-2ubuntu1.3

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "8.14.1-2ubuntu1.4",
            "binary_name": "curl"
        },
        {
            "binary_version": "8.14.1-2ubuntu1.4",
            "binary_name": "libcurl3t64-gnutls"
        },
        {
            "binary_version": "8.14.1-2ubuntu1.4",
            "binary_name": "libcurl4t64"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9079.json"

Ubuntu:26.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.18.0-1ubuntu2.2

Affected versions

8.*
8.14.1-2ubuntu1
8.17.0-1ubuntu1
8.18.0-1ubuntu1
8.18.0-1ubuntu2
8.18.0-1ubuntu2.1

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "8.18.0-1ubuntu2.2",
            "binary_name": "curl"
        },
        {
            "binary_version": "8.18.0-1ubuntu2.2",
            "binary_name": "libcurl3t64-gnutls"
        },
        {
            "binary_version": "8.18.0-1ubuntu2.2",
            "binary_name": "libcurl4t64"
        }
    ]
}

Database specific

source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9079.json"