USN-7972-2

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Source
https://ubuntu.com/security/notices/USN-7972-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7972-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-7972-2
Upstream
Related
Published
2026-05-26T20:39:08Z
Modified
2026-05-26T22:59:14.376593443Z
Summary
opencc vulnerability
Details

USN-7972-1 fixed a vulnerability in OpenCC. This update provides the corresponding update for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.

Original advisory 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:Pro:18.04:LTS / opencc

Package

Name
opencc
Purl
pkg:deb/ubuntu/opencc?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.4-5ubuntu0.1~esm1

Affected versions

1.*
1.0.4-5

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "1.0.4-5ubuntu0.1~esm1",
            "binary_name": "libopencc2"
        },
        {
            "binary_version": "1.0.4-5ubuntu0.1~esm1",
            "binary_name": "libopencc2-data"
        },
        {
            "binary_version": "1.0.4-5ubuntu0.1~esm1",
            "binary_name": "opencc"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7972-2.json"
cves_map 
{
    "ecosystem": "Ubuntu:Pro:18.04: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:Pro:20.04:LTS / opencc

Package

Name
opencc
Purl
pkg:deb/ubuntu/opencc?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.5+git20190530-1ubuntu0.1~esm1

Affected versions

1.*
1.0.5-2
1.0.5+git20190530-1
1.0.5+git20190530-1build1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "1.0.5+git20190530-1ubuntu0.1~esm1",
            "binary_name": "libopencc2"
        },
        {
            "binary_version": "1.0.5+git20190530-1ubuntu0.1~esm1",
            "binary_name": "libopencc2-data"
        },
        {
            "binary_version": "1.0.5+git20190530-1ubuntu0.1~esm1",
            "binary_name": "opencc"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7972-2.json"
cves_map 
{
    "ecosystem": "Ubuntu:Pro:20.04: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"
                }
            ]
        }
    ]
}