CVE-2026-48770

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Source

https://cve.org/CVERecord?id=CVE-2026-48770

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48770.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-48770

Aliases

GHSA-r39g-3mcw-xcg2

Published

2026-06-26T20:22:17.683Z

Modified

2026-07-15T20:54:38.698445Z

Severity

5.0 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H CVSS Calculator

Summary

Notepad++ WM_COPYDATA COPYDATA_FULL_CMDLINE local DoS crash

Details

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, a local process in the same interactive Windows session can send a malformed WMCOPYDATA message to Notepad++ using the COPYDATAFULLCMDLINE path. The handler appears to process COPYDATASTRUCT.lpData as an unbounded NUL-terminated wchart* instead of enforcing COPYDATASTRUCT.cbData. This vulnerability is fixed in 8.9.6.1.

Database specific

{
    "cwe_ids": [
        "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48770.json",
    "cna_assigner": "GitHub_M"
}

References

Affected packages

Git / github.com/notepad-plus-plus/notepad-plus-plus

Affected ranges

Type

GIT

Repo

https://github.com/notepad-plus-plus/notepad-plus-plus

Events

Introduced

Fixed

41dd976310db0ba551bb8a2810b60331df3a77f5

Fixed

f20a0888a92ce557a339b833cd9d9d8e97dc797d

Database specific

{
    "cpe": "cpe:2.3:a:notepad-plus-plus:notepad\\+\\+:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "8.9.6.1"
        }
    ]
}

Affected versions

7.*

7.2.2

7.3.1

v5.*

v5.4.2

v5.4.3

v5.4.4

v5.4.5

v5.5

v5.5.1

v5.6

v5.6.1

v5.6.2

v5.6.3

v5.6.4

v5.6.5

v5.6.6

v5.6.7

v5.6.8

v5.7

v5.8

v5.8.1

v5.8.2

v5.8.3

v5.8.4

v5.8.5

v5.8.6

v5.8.7

v5.9

v5.9.1

v5.9.2

v5.9.3

v5.9.4

v5.9.5

v5.9.6

v5.9.6.1

v5.9.6.2

v5.9.7

v5.9.8

Other

v6.*

v6.1

v6.1.1

v6.1.2

v6.1.3

v6.1.4

v6.1.5

v6.1.6

v6.1.7

v6.1.8

v6.2

v6.2.1

v6.2.2

v6.2.3_-_End_of_World_Edition

v6.3

v6.3.1

v6.3.2

v6.3.3

v6.4

v6.4.1

v6.4.2

v6.4.3

v6.4.4

v6.4.5

v6.5

v6.5.1

v6.5.2

v6.5.3

v6.5.4

v6.5.5

v6.6

v6.6.1

v6.6.2

v6.6.3

v6.6.4

v6.6.6_-_Friday_the_13th_edition

v6.6.7

v6.6.8

v6.6.9

v6.7

v6.7.1

v6.7.2

v6.7.3

v6.7.4_-_Je_suis_Charlie_edition

v6.7.5

v6.7.7

v6.7.8

v6.7.8.1

v6.7.8.2

v6.7.9

v6.7.9.1

v6.7.9.2

v6.8

v6.8.1

v6.8.2

v6.8.3

v6.8.4

v6.8.5

v6.8.6

v6.8.7

v6.8.8

v6.8.9

v6.9

v6.9.1

v6.9.2

v7.*

v7.1

v7.2

v7.2.1

v7.2.2

v7.3

v7.3.1

v7.3.2

v7.3.3

v7.4

v7.4.1

v7.4.2

v7.5.1

v7.5.2

v7.5.3

v7.5.4

v7.5.5

v7.5.6

v7.5.7

v7.5.8

v7.5.9

v7.6

v7.6.1

v7.6.2

v7.6.3

v7.6.4

v7.6.5

v7.6.6

v7.7

v7.7.1

v7.8

v7.8.1

v7.8.2

v7.8.3

v7.8.4

v7.8.5

v7.8.6

v7.8.7

v7.8.8

v7.8.9

v7.9

v7.9.1

v7.9.2

v7.9.3

v7.9.4

v7.9.5

v8.*

v8.1

v8.1.1

v8.1.2

v8.1.3

v8.1.4

v8.1.5

v8.1.6

v8.1.7

v8.1.8

v8.1.9

v8.1.9.1

v8.1.9.2

v8.1.9.3

v8.2

v8.2.1

v8.3

v8.3.1

v8.3.2

v8.3.3

v8.4

v8.4.1

v8.4.2

v8.4.3

v8.4.4

v8.4.5

v8.4.6

v8.4.7

v8.4.8

v8.4.9

v8.5

v8.5.1

v8.5.2

v8.5.3

v8.5.4

v8.5.5

v8.5.6

v8.5.7

v8.5.8

v8.6

v8.6.1

v8.6.2

v8.6.3

v8.6.4

v8.6.5

v8.6.6

v8.6.7

v8.6.8

v8.6.9

v8.7

v8.7.1

v8.7.2

v8.7.3

v8.7.4

v8.7.5

v8.7.6

v8.7.7

v8.7.8

v8.7.9

v8.8

v8.8.1

v8.8.2

v8.8.3

v8.8.4

v8.8.5

v8.8.6

v8.8.7

v8.8.8

v8.8.9

v8.9

v8.9.1

v8.9.2

v8.9.3

v8.9.4

v8.9.5

v8.9.6

Database specific

vanir_signatures_modified

"2026-07-15T20:54:38Z"

vanir_signatures

[
    {
        "signature_type": "Line",
        "target": {
            "file": "PowerEditor/src/NppBigSwitch.cpp"
        },
        "deprecated": false,
        "source": "https://github.com/notepad-plus-plus/notepad-plus-plus/commit/f20a0888a92ce557a339b833cd9d9d8e97dc797d",
        "id": "CVE-2026-48770-1c7ce0ce",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "162310288181697253186583483991444783969",
                "327332410780558114642479121942727616407",
                "62105852796194859496922709386988617473",
                "122949687845711758976411485800303281663",
                "206924673815623729155830518488964809827",
                "15391214335294048241802154834615707537",
                "20546640480010927113401974569659549926",
                "103146463125903476811449829160423934458",
                "251376421513517918977894460196262442803",
                "337263700473535808314888187364561030611",
                "247182092006951224559333297524013352008",
                "10328570580949893477841418692183641839",
                "67166849642954784198965091577983071339",
                "286269319992037249959445292252738928874"
            ],
            "threshold": 0.9
        }
    },
    {
        "signature_type": "Function",
        "target": {
            "file": "PowerEditor/src/NppBigSwitch.cpp",
            "function": "Notepad_plus::process"
        },
        "deprecated": false,
        "source": "https://github.com/notepad-plus-plus/notepad-plus-plus/commit/f20a0888a92ce557a339b833cd9d9d8e97dc797d",
        "id": "CVE-2026-48770-d6902675",
        "signature_version": "v1",
        "digest": {
            "function_hash": "141575852661808811178933808006746621686",
            "length": 90114.0
        }
    }
]

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48770.json"