USN-7972-1

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Source
https://ubuntu.com/security/notices/USN-7972-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7972-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-7972-1
Upstream
Related
Published
2026-01-21T17:35:53Z
Modified
2026-02-10T04:50:48Z
Summary
opencc vulnerability
Details

It was discovered that OpenCC incorrectly handled truncated UTF-8 input. An attacker could possibly use this issue to cause OpenCC to crash, resulting in a denial of service.

References

Affected packages

Ubuntu:22.04:LTS / opencc

Package

Name
opencc
Purl
pkg:deb/ubuntu/opencc@1.1.3+ds1-3ubuntu3.1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.3+ds1-3ubuntu3.1

Affected versions

1.*
1.1.1+git20200624+ds2-10ubuntu3
1.1.3+ds1-3ubuntu2
1.1.3+ds1-3ubuntu3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.1.3+ds1-3ubuntu3.1",
            "binary_name": "libopencc-data"
        },
        {
            "binary_version": "1.1.3+ds1-3ubuntu3.1",
            "binary_name": "libopencc-dev"
        },
        {
            "binary_version": "1.1.3+ds1-3ubuntu3.1",
            "binary_name": "libopencc1.1"
        },
        {
            "binary_version": "1.1.3+ds1-3ubuntu3.1",
            "binary_name": "opencc"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7972-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2025-15536",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:24.04:LTS / opencc

Package

Name
opencc
Purl
pkg:deb/ubuntu/opencc@1.1.7+ds1-1ubuntu0.1?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.7+ds1-1ubuntu0.1

Affected versions

1.*
1.1.6+ds1-1
1.1.7+ds1-1
1.1.7+ds1-1build1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.1.7+ds1-1ubuntu0.1",
            "binary_name": "libopencc-data"
        },
        {
            "binary_version": "1.1.7+ds1-1ubuntu0.1",
            "binary_name": "libopencc-dev"
        },
        {
            "binary_version": "1.1.7+ds1-1ubuntu0.1",
            "binary_name": "libopencc1.1"
        },
        {
            "binary_version": "1.1.7+ds1-1ubuntu0.1",
            "binary_name": "opencc"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7972-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "id": "CVE-2025-15536",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:25.10 / opencc

Package

Name
opencc
Purl
pkg:deb/ubuntu/opencc@1.1.9+ds1-2ubuntu0.1?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.9+ds1-2ubuntu0.1

Affected versions

1.*
1.1.9+ds1-1build1
1.1.9+ds1-2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.1.9+ds1-2ubuntu0.1",
            "binary_name": "libopencc-data"
        },
        {
            "binary_version": "1.1.9+ds1-2ubuntu0.1",
            "binary_name": "libopencc-dev"
        },
        {
            "binary_version": "1.1.9+ds1-2ubuntu0.1",
            "binary_name": "libopencc1.1"
        },
        {
            "binary_version": "1.1.9+ds1-2ubuntu0.1",
            "binary_name": "opencc"
        },
        {
            "binary_version": "1.1.9+ds1-2ubuntu0.1",
            "binary_name": "python3-opencc"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7972-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "id": "CVE-2025-15536",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}