CVE-2026-85279

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Source

https://cve.org/CVERecord?id=CVE-2026-85279

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-85279.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-85279

Aliases

GHSA-h2wq-6x75-h8q2

Published

2026-09-22T17:08:42Z

Modified

2026-09-25T08:24:13Z

Severity

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

Summary

Notepad++: Stack Buffer Overflow in Plugin Lexer Loading via Unchecked GetLexerCount() Return Value

Details

Notepad++ is a free and open-source source code editor. Prior to 8.9.8, Notepad++ contains a stack buffer overflow in PluginsManager::loadPluginFromPath in PowerEditor/src/MISC/PluginsManager/PluginsManager.cpp because the plugin-supplied GetLexerCount() result controls a loop that writes to containers[30] without enforcing NB_MAX_EXTERNAL_LANG. A malicious or compromised plugin that reports more than 30 lexers can write beyond the stack array and corrupt control data, which can permit arbitrary code execution in the Notepad++ process context. This issue is fixed in version 8.9.8.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-121"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85279.json"
}

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

70b88f95311d88523cde6be1b1ec938aa48c24bc

Fixed

f1e1c71b090d69ca0f0175ab73895da41db67a16

Fixed

40f896e6f6c49a29b6ca3f559696dd786f40152d

Database specific

Show details

{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "8.9.8"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

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

v8.9.6.1

v8.9.6.2

v8.9.6.4

v8.9.7

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-85279.json"

vanir_signatures

[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "207796132287657304326662841067091607846",
                "153556693332993613947435049971904568857",
                "332887383360866028661949848316255741798",
                "312791939348936290333481667391921799838"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-85279-7bdd8fad",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/notepad-plus-plus/notepad-plus-plus/commit/f1e1c71b090d69ca0f0175ab73895da41db67a16",
        "target":  {
            "file":  "PowerEditor/src/MISC/PluginsManager/PluginsManager.cpp"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "18888275817525651637667709024927929137",
            "length":  5705
        },
        "id":  "CVE-2026-85279-ce6dc4e4",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/notepad-plus-plus/notepad-plus-plus/commit/f1e1c71b090d69ca0f0175ab73895da41db67a16",
        "target":  {
            "file":  "PowerEditor/src/MISC/PluginsManager/PluginsManager.cpp",
            "function":  "PluginsManager::loadPluginFromPath"
        }
    }
]

vanir_signatures_modified

"2026-09-25T08:24:13Z"