CVE-2026-48778

Overview

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Automated description summarized from trusted sources.

CVE-2026-48778 is a vulnerability identified in Notepad++, a popular open-source text editor for Windows. This flaw resides in how the application processes its `config.xml` configuration file, specifically within the `<GUIConfig name="commandLineInterpreter">` tag. The value from this tag is read and stored without any validation or digital signature checks. When a user initiates the "File → Open Containing Folder → cmd" action, Notepad++ passes the unvalidated string from the `commandLineInterpreter` tag directly to the `ShellExecute()` function. This allows an attacker to substitute an arbitrary executable in place of the intended command interpreter, leading to arbitrary code execution. Potential exploitation vectors include direct modification of the `config.xml` file, use of malicious shortcuts with the `-settingsDir=` flag, or cloud sync poisoning. The vulnerability was addressed in Notepad++ version 8.9.6.1.

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  1. ⚠️ Vulnerabilidades en productos Notepad++ ❗ CVE-2026-48800 ❗ CVE-2026-48778 ➡️ Más info: https://t.co/YIct5soKdR https://t.co/vGNRxPAhql

    @CERTpy

    11 Jun 2026

    67 Impressions

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  2. CVE-2026-48778: Notepad++ has released a security advisory addressing multiple critical vulnerabilities, including two arbitrary code execution flaws. The most severe flaw, CVE-2026-48778, allows attackers to silently run malicious code on a victim's machine via…

    @lyrie_ai

    8 Jun 2026

    34 Impressions

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    1 Reply

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  3. Attention, elevated activities detected targeting Notepad++ (CVE-2026-48778) https://t.co/KNBmqMi8nc

    @vuldb

    5 Jun 2026

    55 Impressions

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  4. CVE-2026-48778 &amp; CVE-2026-48800 | Notepad++ | CVSS 7.8 HIGH 🐛 Config file injection - fake Run menu entries execute attacker code and survive reboots ✅ Fixed: Notepad++ 8.9.6.1 (May 27) 🔗 https://t.co/4APJxtIc56 #CVE #Cybersecurity #InfoSec #PatchNow

    @mwbengtsson

    2 Jun 2026

    471 Impressions

    1 Retweet

    1 Like

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  5. 安全圈最近投喂的PoC仓库一堆跑不动的,但这个poc-lab有点意思。每个CVE目录配好了exploit脚本和复现指南,从Linux内核到Chrome、Redis、Notepad++,覆盖的都是今年高严重性漏洞。最近更新的CVE-2026-48778 Notepad++ RCE和CVE-20

    @vintcessun

    1 Jun 2026

    37 Impressions

    1 Retweet

    1 Like

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  6. Notepad++で深刻なコマンドインジェクションの脆弱性が2件修正。shortcuts.xmlからのCVE-2026-48800とconfig.xmlからのCVE-2026-48778。PoC(攻撃の概念実証コード)公開済み。 https://t.co/XVVXBpn5WN

    @__kokumoto

    1 Jun 2026

    1084 Impressions

    1 Retweet

    7 Likes

    2 Bookmarks

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  7. A Notepad++ arbitrary code execution vulnerability (CVE-2026-48778) allows attackers to replace cmd.exe with malicious executables via config.xml. https://t.co/FTUmvdJdf5 #NotepadPlusPlus #CVE #ArbitraryCodeExecution #ConfigXML #WindowsSecurity #AppData #InfoSec https://t.co/zo

    @redsecuretech

    31 May 2026

    51 Impressions

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  8. Notepad++ vulnerabilities could enable arbitrary code execution on Windows systems (CVE-2026-48778 and CVE-2026-48800) https://t.co/LpMC86gA0w #patchmanagement

    @eyalestrin

    30 May 2026

    42 Impressions

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  9. GitHub - atiilla/Notepad-8.9.6-PoC: Proof-of-concept scripts for three vulnerabilities in Notepad++ &lt;= 8.9.6, patched in v8.9.6.1 (2026-05-26) CVE-2026-48770 / CVE-2026-48778 / CVE-2026-48800 · GitHub - https://t.co/nSK5LtNkDy

    @piedpiper1616

    30 May 2026

    430 Impressions

    1 Retweet

    5 Likes

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  10. Se han revelado vulnerabilidades críticas (CVE-2026-48778 y CVE-2026-48800) en el popular editor Notepad++ que permiten la ejecución arbitraria de código (RCE). El fallo radica en la falta de validación de comandos dentro de los archivos de configuración (config.xml y https:

    @tpx_Security

    29 May 2026

    88 Impressions

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  11. Notepad++ &lt;= 8.9.6 Multiple Vulnerabilities (CVE-2026-48770, CVE-2026-48778, CVE-2026-48800) poc: https://t.co/hynIeZp5SS https://t.co/Et7ZKIEN5v

    @hackingspace

    29 May 2026

    272 Impressions

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    3 Likes

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  12. csirt_it: ‼️ #Notepad++: disponibili #PoC per le CVE-2026-48800, CVE-2026-48778 e CVE-2026-48770 che interessano il noto editor di testo Rischio: 🔴 Tipologia: 🔸 Arbitrary Code Execution 🔸 Denial of Service 🔗 https://t.co/tG5AKVnGtJ 🔄 Aggiorname… https://

    @Vulcanux_

    28 May 2026

    51 Impressions

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  13. 🚨 اذا انت من الجيل القديم ولاتزال تستخدم Notepad++ حدّث البرنامج فوراً إلى الإصدار الأخير (v8.9.6.1). 📍 الثغرة الأولى: (CVE-2026-48770) 📍 الثغرة الثانية: (CVE-2026-48778) 📍

    @buhaimedi

    28 May 2026

    3715 Impressions

    4 Retweets

    35 Likes

    18 Bookmarks

    3 Replies

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  14. ‼️ #Notepad++: disponibili #PoC per le CVE-2026-48800, CVE-2026-48778 e CVE-2026-48770 che interessano il noto editor di testo Rischio: 🔴 Tipologia: 🔸 Arbitrary Code Execution 🔸 Denial of Service 🔗 https://t.co/DEGdsIPlJS 🔄 Aggiornamenti disponibili 🔄 h

    @csirt_it

    28 May 2026

    253 Impressions

    1 Retweet

    2 Likes

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  15. برای ابزار پرکاربرد Notepad plus plus چندین آسیب پذیری از نوع Code execution با کدهای شناسایی CVE-2026-48770 و CVE-2026-48778 و CVE-2026-48800 منتشر شده است . برای امن سازی به نسخه 8.9.6.1 به رو

    @EthicalSafe

    28 May 2026

    12 Impressions

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References

Sources include official advisories and independent security research.