CVE-2026-1425

A security flaw has been discovered in pymumu SmartDNS up to 47.1. This vulnerability affects the function dnsdecoderrhead/dnsdecodeSVCBHTTPS of the file src/dns.c of the component SVBC Record Parser. The manipulation results in stack-based buffer overflow. It is possible to launch the attack remotely. A high complexity level is associated with this attack. It is stated that the exploitability is difficult. The patch is identified as 2d57c4b4e1add9b4537aeb403f794a084727e1c8. Applying a patch is advised to resolve this issue.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1425.json",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "47.0"
                },
                {
                    "last_affected": "47.0"
                }
            ]
        }
    ],
    "cwe_ids": [
        "CWE-119",
        "CWE-121"
    ],
    "cna_assigner": "VulDB"
}

References

Affected packages

Git / github.com/pymumu/smartdns

Affected ranges

Type

GIT

Repo

https://github.com/pymumu/smartdns

Events

Introduced

3e48a94b9875b74509c5265d740915e7c8e60315

Fixed

2d57c4b4e1add9b4537aeb403f794a084727e1c8

Database specific

Show details

{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "47.1"
        },
        {
            "last_affected": "47.1"
        }
    ]
}

Affected versions

47.*

47.1

Release47.*

Release47.1

Database specific

vanir_signatures

[
    {
        "id": "CVE-2026-1425-26677959",
        "target": {
            "file": "src/dns.c"
        },
        "deprecated": false,
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "47936723472579650317540588921420773264",
                "297295444819886776360825326696600298970",
                "31837311719478478378871006974787145952",
                "14918559670342219424111814079108165961",
                "65893038981463212428264919369997831285",
                "3532271727601454759440135402921217734"
            ]
        },
        "signature_version": "v1",
        "source": "https://github.com/pymumu/smartdns/commit/2d57c4b4e1add9b4537aeb403f794a084727e1c8",
        "signature_type": "Line"
    },
    {
        "id": "CVE-2026-1425-93acf2f1",
        "target": {
            "function": "_dns_decode_rr_head",
            "file": "src/dns.c"
        },
        "deprecated": false,
        "digest": {
            "function_hash": "189241239471486783380937913167718436350",
            "length": 599.0
        },
        "signature_version": "v1",
        "source": "https://github.com/pymumu/smartdns/commit/2d57c4b4e1add9b4537aeb403f794a084727e1c8",
        "signature_type": "Function"
    },
    {
        "id": "CVE-2026-1425-fd6ceecd",
        "target": {
            "function": "_dns_decode_SVCB_HTTPS",
            "file": "src/dns.c"
        },
        "deprecated": false,
        "digest": {
            "function_hash": "200354488342086936584005011630155940432",
            "length": 1497.0
        },
        "signature_version": "v1",
        "source": "https://github.com/pymumu/smartdns/commit/2d57c4b4e1add9b4537aeb403f794a084727e1c8",
        "signature_type": "Function"
    }
]

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-1425.json"

vanir_signatures_modified

"2026-08-12T16:24:46Z"