UBUNTU-CVE-2025-6496

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Source
https://ubuntu.com/security/CVE-2025-6496
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-6496.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-6496
Upstream
Published
2025-06-23T00:15:00Z
Modified
2026-04-22T16:09:06.233212Z
Severity
  • 3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • 1.9 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A vulnerability was found in HTACG tidy-html5 5.8.0. It has been declared as problematic. This vulnerability affects the function InsertNodeAsParent of the file src/parser.c. The manipulation leads to null pointer dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.

References

Affected packages

Ubuntu:18.04:LTS / tidy-html5

Package

Name
tidy-html5
Purl
pkg:deb/ubuntu/tidy-html5@1:5.2.0-2?arch=source&distro=bionic

Affected ranges

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

Affected versions

1:5.*
1:5.2.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:5.2.0-2",
            "binary_name": "libtidy5"
        },
        {
            "binary_version": "1:5.2.0-2",
            "binary_name": "tidy"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-6496.json"

Ubuntu:20.04:LTS / tidy-html5

Package

Name
tidy-html5
Purl
pkg:deb/ubuntu/tidy-html5@2:5.6.0-11ubuntu0.20.04.1?arch=source&distro=focal

Affected ranges

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

Affected versions

2:5.*
2:5.6.0-10
2:5.6.0-11
2:5.6.0-11ubuntu0.20.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2:5.6.0-11ubuntu0.20.04.1",
            "binary_name": "libtidy5deb1"
        },
        {
            "binary_version": "2:5.6.0-11ubuntu0.20.04.1",
            "binary_name": "tidy"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-6496.json"

Ubuntu:22.04:LTS / tidy-html5

Package

Name
tidy-html5
Purl
pkg:deb/ubuntu/tidy-html5@2:5.6.0-11ubuntu0.22.04.1?arch=source&distro=jammy

Affected ranges

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

Affected versions

2:5.*
2:5.6.0-11build1
2:5.6.0-11build2
2:5.6.0-11ubuntu0.22.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2:5.6.0-11ubuntu0.22.04.1",
            "binary_name": "libtidy5deb1"
        },
        {
            "binary_version": "2:5.6.0-11ubuntu0.22.04.1",
            "binary_name": "tidy"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-6496.json"

Ubuntu:24.04:LTS / tidy-html5

Package

Name
tidy-html5
Purl
pkg:deb/ubuntu/tidy-html5@2:5.6.0-11ubuntu2?arch=source&distro=noble

Affected ranges

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

Affected versions

2:5.*
2:5.6.0-11build2
2:5.6.0-11ubuntu1
2:5.6.0-11ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2:5.6.0-11ubuntu2",
            "binary_name": "libtidy5deb1"
        },
        {
            "binary_version": "2:5.6.0-11ubuntu2",
            "binary_name": "tidy"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-6496.json"

Ubuntu:25.10 / tidy-html5

Package

Name
tidy-html5
Purl
pkg:deb/ubuntu/tidy-html5@2:5.8.0-2?arch=source&distro=questing

Affected ranges

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

Affected versions

2:5.*
2:5.8.0-1ubuntu1
2:5.8.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2:5.8.0-2",
            "binary_name": "libtidy58"
        },
        {
            "binary_version": "2:5.8.0-2",
            "binary_name": "tidy"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-6496.json"