UBUNTU-CVE-2026-79591

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Source
https://ubuntu.com/security/CVE-2026-79591
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79591.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-79591
Upstream
  • CVE-2026-79591
Published
2026-09-10T21:17:00Z
Modified
2026-09-17T13:30:14Z
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
  • Ubuntu - medium
Summary
[none]
Details

A heap-buffer-overflow and use-after-free vulnerability exists in the xls_getCSS() function of libxls 1.6.3 due to insufficient validation of a file-controlled font index.

References

Affected packages

Ubuntu:16.04:LTS
r-cran-readxl

Package

Name
r-cran-readxl
Purl
pkg:deb/ubuntu/r-cran-readxl?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*
0.1.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "r-cran-readxl",
            "binary_version": "0.1.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79591.json"
Ubuntu:18.04:LTS
r-cran-readxl

Package

Name
r-cran-readxl
Purl
pkg:deb/ubuntu/r-cran-readxl?arch=source&distro=bionic

Affected ranges

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

Affected versions

1.*
1.0.0-1build1
1.0.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "r-cran-readxl",
            "binary_version": "1.0.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79591.json"
Ubuntu:20.04:LTS
r-cran-readxl

Package

Name
r-cran-readxl
Purl
pkg:deb/ubuntu/r-cran-readxl?arch=source&distro=focal

Affected ranges

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

Affected versions

1.*
1.3.1-2
1.3.1-2build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "r-cran-readxl",
            "binary_version": "1.3.1-2build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79591.json"
Ubuntu:22.04:LTS
r-cran-readxl

Package

Name
r-cran-readxl
Purl
pkg:deb/ubuntu/r-cran-readxl?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.3.1-2build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "r-cran-readxl",
            "binary_version": "1.3.1-2build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79591.json"
Ubuntu:24.04:LTS
r-cran-readxl

Package

Name
r-cran-readxl
Purl
pkg:deb/ubuntu/r-cran-readxl?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.4.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "r-cran-readxl",
            "binary_version": "1.4.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79591.json"
Ubuntu:26.04:LTS
r-cran-readxl

Package

Name
r-cran-readxl
Purl
pkg:deb/ubuntu/r-cran-readxl?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.4.5-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "r-cran-readxl",
            "binary_version": "1.4.5-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79591.json"