UBUNTU-CVE-2026-116723

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Source
https://ubuntu.com/security/CVE-2026-116723
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116723.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-116723
Upstream
Published
2026-11-03T00:00:00Z
Modified
2026-11-04T03:30:34Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • 8.5 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

FLTK through 1.4.5 contains a stack-based buffer overflow vulnerability in Fl_BMP_Image::load_bmp_() that allows attackers to corrupt stack memory by supplying an oversized BMP colors_used field. Attackers can craft BMP or ICO files with colors_used above 256 to overflow the 768-byte colormap array, causing crashes or potential code execution.

References

Affected packages

Ubuntu:16.04:LTS
fltk1.3

Package

Name
fltk1.3
Purl
pkg:deb/ubuntu/fltk1.3?arch=source&distro=xenial

Affected ranges

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

Affected versions

1.*
1.3.3-4
1.3.3-6
1.3.3-7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fltk1.3-games",
            "binary_version": "1.3.3-7"
        },
        {
            "binary_name": "fluid",
            "binary_version": "1.3.3-7"
        },
        {
            "binary_name": "libfltk-cairo1.3",
            "binary_version": "1.3.3-7"
        },
        {
            "binary_name": "libfltk-forms1.3",
            "binary_version": "1.3.3-7"
        },
        {
            "binary_name": "libfltk-gl1.3",
            "binary_version": "1.3.3-7"
        },
        {
            "binary_name": "libfltk-images1.3",
            "binary_version": "1.3.3-7"
        },
        {
            "binary_name": "libfltk1.3",
            "binary_version": "1.3.3-7"
        },
        {
            "binary_name": "libfltk1.3-compat-headers",
            "binary_version": "1.3.3-7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116723.json"
Ubuntu:18.04:LTS
fltk1.3

Package

Name
fltk1.3
Purl
pkg:deb/ubuntu/fltk1.3?arch=source&distro=bionic

Affected ranges

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

Affected versions

1.*
1.3.4-6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fltk1.3-games",
            "binary_version": "1.3.4-6"
        },
        {
            "binary_name": "fluid",
            "binary_version": "1.3.4-6"
        },
        {
            "binary_name": "libfltk-cairo1.3",
            "binary_version": "1.3.4-6"
        },
        {
            "binary_name": "libfltk-forms1.3",
            "binary_version": "1.3.4-6"
        },
        {
            "binary_name": "libfltk-gl1.3",
            "binary_version": "1.3.4-6"
        },
        {
            "binary_name": "libfltk-images1.3",
            "binary_version": "1.3.4-6"
        },
        {
            "binary_name": "libfltk1.3",
            "binary_version": "1.3.4-6"
        },
        {
            "binary_name": "libfltk1.3-compat-headers",
            "binary_version": "1.3.4-6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116723.json"
Ubuntu:20.04:LTS
fltk1.3

Package

Name
fltk1.3
Purl
pkg:deb/ubuntu/fltk1.3?arch=source&distro=focal

Affected ranges

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

Affected versions

1.*
1.3.4-9ubuntu1
1.3.4-10
1.3.4-10build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fltk1.3-games",
            "binary_version": "1.3.4-10build1"
        },
        {
            "binary_name": "fluid",
            "binary_version": "1.3.4-10build1"
        },
        {
            "binary_name": "libfltk-cairo1.3",
            "binary_version": "1.3.4-10build1"
        },
        {
            "binary_name": "libfltk-forms1.3",
            "binary_version": "1.3.4-10build1"
        },
        {
            "binary_name": "libfltk-gl1.3",
            "binary_version": "1.3.4-10build1"
        },
        {
            "binary_name": "libfltk-images1.3",
            "binary_version": "1.3.4-10build1"
        },
        {
            "binary_name": "libfltk1.3",
            "binary_version": "1.3.4-10build1"
        },
        {
            "binary_name": "libfltk1.3-compat-headers",
            "binary_version": "1.3.4-10build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116723.json"
Ubuntu:22.04:LTS
fltk1.3

Package

Name
fltk1.3
Purl
pkg:deb/ubuntu/fltk1.3?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.3.5-3
1.3.8-2
1.3.8-3
1.3.8-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fltk1.3-games",
            "binary_version": "1.3.8-4"
        },
        {
            "binary_name": "fluid",
            "binary_version": "1.3.8-4"
        },
        {
            "binary_name": "libfltk-cairo1.3",
            "binary_version": "1.3.8-4"
        },
        {
            "binary_name": "libfltk-forms1.3",
            "binary_version": "1.3.8-4"
        },
        {
            "binary_name": "libfltk-gl1.3",
            "binary_version": "1.3.8-4"
        },
        {
            "binary_name": "libfltk-images1.3",
            "binary_version": "1.3.8-4"
        },
        {
            "binary_name": "libfltk1.3",
            "binary_version": "1.3.8-4"
        },
        {
            "binary_name": "libfltk1.3-compat-headers",
            "binary_version": "1.3.8-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116723.json"
Ubuntu:24.04:LTS
fltk1.3

Package

Name
fltk1.3
Purl
pkg:deb/ubuntu/fltk1.3?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.3.8-5
1.3.8-6
1.3.8-6.1build1
1.3.8-6.1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fltk1.3-games",
            "binary_version": "1.3.8-6.1build2"
        },
        {
            "binary_name": "fluid",
            "binary_version": "1.3.8-6.1build2"
        },
        {
            "binary_name": "libfltk-cairo1.3t64",
            "binary_version": "1.3.8-6.1build2"
        },
        {
            "binary_name": "libfltk-forms1.3t64",
            "binary_version": "1.3.8-6.1build2"
        },
        {
            "binary_name": "libfltk-gl1.3t64",
            "binary_version": "1.3.8-6.1build2"
        },
        {
            "binary_name": "libfltk-images1.3t64",
            "binary_version": "1.3.8-6.1build2"
        },
        {
            "binary_name": "libfltk1.3-compat-headers",
            "binary_version": "1.3.8-6.1build2"
        },
        {
            "binary_name": "libfltk1.3t64",
            "binary_version": "1.3.8-6.1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116723.json"
Ubuntu:26.04:LTS
fltk1.3

Package

Name
fltk1.3
Purl
pkg:deb/ubuntu/fltk1.3?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.3.11-2
1.3.11-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fltk1.3-games",
            "binary_version": "1.3.11-3"
        },
        {
            "binary_name": "libfltk-cairo1.3t64",
            "binary_version": "1.3.11-3"
        },
        {
            "binary_name": "libfltk-forms1.3t64",
            "binary_version": "1.3.11-3"
        },
        {
            "binary_name": "libfltk-gl1.3t64",
            "binary_version": "1.3.11-3"
        },
        {
            "binary_name": "libfltk-images1.3t64",
            "binary_version": "1.3.11-3"
        },
        {
            "binary_name": "libfltk1.3-compat-headers",
            "binary_version": "1.3.11-3"
        },
        {
            "binary_name": "libfltk1.3t64",
            "binary_version": "1.3.11-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116723.json"
fltk1.4

Package

Name
fltk1.4
Purl
pkg:deb/ubuntu/fltk1.4?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.4.3-1ubuntu2
1.4.4-1
1.4.4-2
1.4.4-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fltk-options",
            "binary_version": "1.4.4-3"
        },
        {
            "binary_name": "fltk1.4-games",
            "binary_version": "1.4.4-3"
        },
        {
            "binary_name": "fluid",
            "binary_version": "1.4.4-3"
        },
        {
            "binary_name": "libfltk-cairo1.4",
            "binary_version": "1.4.4-3"
        },
        {
            "binary_name": "libfltk-forms1.4",
            "binary_version": "1.4.4-3"
        },
        {
            "binary_name": "libfltk-gl1.4",
            "binary_version": "1.4.4-3"
        },
        {
            "binary_name": "libfltk-images1.4",
            "binary_version": "1.4.4-3"
        },
        {
            "binary_name": "libfltk1.4",
            "binary_version": "1.4.4-3"
        },
        {
            "binary_name": "libfltk1.4-compat-headers",
            "binary_version": "1.4.4-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116723.json"
Ubuntu:26.10
fltk1.3

Package

Name
fltk1.3
Purl
pkg:deb/ubuntu/fltk1.3?arch=source&distro=stonking

Affected ranges

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

Affected versions

1.*
1.3.11-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fltk1.3-games",
            "binary_version": "1.3.11-3"
        },
        {
            "binary_name": "libfltk-cairo1.3t64",
            "binary_version": "1.3.11-3"
        },
        {
            "binary_name": "libfltk-forms1.3t64",
            "binary_version": "1.3.11-3"
        },
        {
            "binary_name": "libfltk-gl1.3t64",
            "binary_version": "1.3.11-3"
        },
        {
            "binary_name": "libfltk-images1.3t64",
            "binary_version": "1.3.11-3"
        },
        {
            "binary_name": "libfltk1.3-compat-headers",
            "binary_version": "1.3.11-3"
        },
        {
            "binary_name": "libfltk1.3t64",
            "binary_version": "1.3.11-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116723.json"
fltk1.4

Package

Name
fltk1.4
Purl
pkg:deb/ubuntu/fltk1.4?arch=source&distro=stonking

Affected ranges

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

Affected versions

1.*
1.4.4-3
1.4.4-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fltk-options",
            "binary_version": "1.4.4-4"
        },
        {
            "binary_name": "fltk1.4-games",
            "binary_version": "1.4.4-4"
        },
        {
            "binary_name": "fluid",
            "binary_version": "1.4.4-4"
        },
        {
            "binary_name": "libfltk-cairo1.4",
            "binary_version": "1.4.4-4"
        },
        {
            "binary_name": "libfltk-forms1.4",
            "binary_version": "1.4.4-4"
        },
        {
            "binary_name": "libfltk-gl1.4",
            "binary_version": "1.4.4-4"
        },
        {
            "binary_name": "libfltk-images1.4",
            "binary_version": "1.4.4-4"
        },
        {
            "binary_name": "libfltk1.4",
            "binary_version": "1.4.4-4"
        },
        {
            "binary_name": "libfltk1.4-compat-headers",
            "binary_version": "1.4.4-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116723.json"