USN-8857-1

It was discovered that KCoreAddons incorrectly handled shell argument quoting in KShell::quoteArgs. The parsing did not adequately handle shell metacharacters, which could lead to a shell escape. An attacker could possibly use this issue to execute arbitrary commands in applications that relied on this method to handle user input.

References

Affected packages

Ubuntu:26.04:LTS / kf6-kcoreaddons

Package

Name: kf6-kcoreaddons
Purl: pkg:deb/ubuntu/kf6-kcoreaddons?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

6.24.0-0ubuntu1.1

Affected versions

6.*

6.17.0-0ubuntu1

6.19.0-0ubuntu1

6.20.0-0ubuntu1

6.21.0-0ubuntu1

6.22.0-0ubuntu1

6.23.0-0ubuntu1

6.24.0-0ubuntu1

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libkf6coreaddons-data",
            "binary_version": "6.24.0-0ubuntu1.1"
        },
        {
            "binary_name": "libkf6coreaddons6",
            "binary_version": "6.24.0-0ubuntu1.1"
        },
        {
            "binary_name": "qml6-module-org-kde-coreaddons",
            "binary_version": "6.24.0-0ubuntu1.1"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2026-41526",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:26.04:LTS"
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8857-1.json"