UBUNTU-CVE-2026-121627

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Source
https://ubuntu.com/security/CVE-2026-121627
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121627.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-121627
Upstream
Published
2026-11-03T18:17:00Z
Modified
2026-11-05T11:46:32Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

buku 5.0 through 5.1.1 contains a stored cross-site scripting vulnerability in the bukuserver bookmark list that allows attackers to execute script via an unescaped bookmark URL in BookmarkModelView._list_entry(). Attackers can submit a URL containing a double quote and event handler through the unauthenticated /api/bookmarks endpoint to issue same-origin API requests with viewers' credentials.

References

Affected packages

Ubuntu:18.04:LTS
buku

Package

Name
buku
Purl
pkg:deb/ubuntu/buku?arch=source&distro=bionic

Affected ranges

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

Affected versions

3.*
3.2.0-1
3.4.0-1
3.5.0-1
3.6-1
3.7-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "buku",
            "binary_version": "3.7-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121627.json"
Ubuntu:20.04:LTS
buku

Package

Name
buku
Purl
pkg:deb/ubuntu/buku?arch=source&distro=focal

Affected ranges

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

Affected versions

4.*
4.2.2+ds-1
4.2.2+ds-2
4.3+ds-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "buku",
            "binary_version": "4.3+ds-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121627.json"
Ubuntu:22.04:LTS
buku

Package

Name
buku
Purl
pkg:deb/ubuntu/buku?arch=source&distro=jammy

Affected ranges

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

Affected versions

4.*
4.6+ds-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "buku",
            "binary_version": "4.6+ds-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121627.json"
Ubuntu:24.04:LTS
buku

Package

Name
buku
Purl
pkg:deb/ubuntu/buku?arch=source&distro=noble

Affected ranges

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

Affected versions

4.*
4.8+ds-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "buku",
            "binary_version": "4.8+ds-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121627.json"
Ubuntu:26.04:LTS
buku

Package

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

Affected ranges

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

Affected versions

4.*
4.9+ds-1
5.*
5.0+ds-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "buku",
            "binary_version": "5.0+ds-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121627.json"
Ubuntu:26.10
buku

Package

Name
buku
Purl
pkg:deb/ubuntu/buku?arch=source&distro=stonking

Affected ranges

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

Affected versions

5.*
5.0+ds-1
5.1.1+ds-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "buku",
            "binary_version": "5.1.1+ds-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121627.json"