UBUNTU-CVE-2026-26064

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Source

https://ubuntu.com/security/CVE-2026-26064

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26064.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-26064

Upstream

CVE-2026-26064

Published

2026-02-20T02:16:00Z

Modified

2026-02-27T09:59:13Z

Severity

9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H CVSS Calculator
8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Versions 9.2.1 and below contain a Path Traversal vulnerability that allows arbitrary file writes anywhere the user has write permissions. On Windows, this leads to Remote Code Execution by writing a payload to the Startup folder, which executes on next login. Function extractpictures only checks startswith('Pictures'), and does not sanitize '..' sequences. calibre's own ZipFile.extractall() in utils/zipfile.py does sanitize '..' via _gettargetpath(), but extract_pictures() bypasses this by using manual zf.read() + open(). This issue has been fixed in version 9.3.0.

References

Affected packages

Ubuntu:16.04:LTS

calibre

Package

Name: calibre
Purl: pkg:deb/ubuntu/calibre@2.55.0+dfsg-1ubuntu0.2?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.33.0+dfsg-1build1

2.38.0+dfsg-1

2.45.0+dfsg-1

2.45.0+dfsg-1build1

2.48.0+dfsg-1

2.48.0+dfsg-1build1

2.54.0+dfsg-1

2.55.0+dfsg-1

2.55.0+dfsg-1ubuntu0.2

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.55.0+dfsg-1ubuntu0.2",
            "binary_name": "calibre"
        },
        {
            "binary_version": "2.55.0+dfsg-1ubuntu0.2",
            "binary_name": "calibre-bin"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26064.json"

Ubuntu:18.04:LTS

calibre

Package

Name: calibre
Purl: pkg:deb/ubuntu/calibre@3.21.0+dfsg-1build1?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.7.0+dfsg-2

3.7.0+dfsg-2build1

3.12.0+dfsg-1

3.13.0+dfsg-1

3.14.0+dfsg-1

3.15.0.1+dfsg-1

3.16.0+dfsg-1

3.16.0+dfsg-1build1

3.17.0+dfsg-1

3.17.0+dfsg-2

3.18.0+dfsg-1build1

3.19.0+dfsg-1

3.20.0+dfsg-1

3.21.0+dfsg-1

3.21.0+dfsg-1build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "3.21.0+dfsg-1build1",
            "binary_name": "calibre"
        },
        {
            "binary_version": "3.21.0+dfsg-1build1",
            "binary_name": "calibre-bin"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26064.json"

Ubuntu:20.04:LTS

calibre

Package

Name: calibre
Purl: pkg:deb/ubuntu/calibre@4.99.4+dfsg+really4.12.0-1ubuntu1?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.46.0+dfsg-1

4.*

4.2.0+dfsg-2

4.3.0+dfsg-1

4.3.0+dfsg-2

4.4.0+dfsg-1

4.5.0+dfsg-1

4.5.0+dfsg-2

4.5.0+dfsg-3

4.6.0+dfsg-1

4.7.0+dfsg-1

4.99.3+dfsg-2

4.99.4+dfsg-1

4.99.4+dfsg-1build1

4.99.4+dfsg+really4.10.0+py3-2

4.99.4+dfsg+really4.11.2-1

4.99.4+dfsg+really4.11.2-1build1

4.99.4+dfsg+really4.12.0-1

4.99.4+dfsg+really4.12.0-1build1

4.99.4+dfsg+really4.12.0-1ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "4.99.4+dfsg+really4.12.0-1ubuntu1",
            "binary_name": "calibre"
        },
        {
            "binary_version": "4.99.4+dfsg+really4.12.0-1ubuntu1",
            "binary_name": "calibre-bin"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26064.json"

Ubuntu:22.04:LTS

calibre

Package

Name: calibre
Purl: pkg:deb/ubuntu/calibre@5.37.0+dfsg-1build1?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.25.0+dfsg-2

5.33.2+dfsg-1

5.34.0+dfsg-1

5.35.0+dfsg-1ubuntu2

5.37.0+dfsg-1

5.37.0+dfsg-1build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "5.37.0+dfsg-1build1",
            "binary_name": "calibre"
        },
        {
            "binary_version": "5.37.0+dfsg-1build1",
            "binary_name": "calibre-bin"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26064.json"

Ubuntu:24.04:LTS

calibre

Package

Name: calibre
Purl: pkg:deb/ubuntu/calibre@7.6.0+ds-1build1?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

6.*

6.24.0+ds-1

6.29.0+ds-1

7.*

7.0.0+ds-1

7.1.0+ds-1

7.1.0+ds-2

7.2.0+ds-1

7.2.0+ds-1build1

7.3.0+ds-1

7.4.0+ds-1

7.5.1+ds-1

7.5.1+ds-2

7.5.1+ds-3

7.6.0+ds-1

7.6.0+ds-1build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "7.6.0+ds-1build1",
            "binary_name": "calibre"
        },
        {
            "binary_version": "7.6.0+ds-1build1",
            "binary_name": "calibre-bin"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26064.json"

Ubuntu:25.10

calibre

Package

Name: calibre
Purl: pkg:deb/ubuntu/calibre@8.8.0+ds-3build1?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

7.*

7.26.0+ds-4build1

8.*

8.3.0+ds-1

8.4.0+ds-1

8.5.0+ds-1

8.6.0+ds-1

8.7.0+ds-1

8.8.0+ds-2

8.8.0+ds-3

8.8.0+ds-3build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "8.8.0+ds-3build1",
            "binary_name": "calibre"
        },
        {
            "binary_version": "8.8.0+ds-3build1",
            "binary_name": "calibre-bin"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26064.json"