CVE-2026-48800: Notepad++ is a free and open-source source code editor

Q: How do I fix CVE-2026-48800?

notepad\+\+: upgrade to 8.9.6.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-48800 being exploited?

CVE-2026-48800 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-48800 affect?

CVE-2026-48800 affects notepad\+\+. Severity is high (CVSS 7.8). Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, the tag text content inside in shortcuts.xml is read by NppXml::value(aNode) (Parameters.cpp:3658) in the feedUserCmds() function and

Routine

HIGH 7.8UPGRADE

CVE-2026-48800 is a high-severity flaw (CVSS 7.8) affecting notepad\+\+. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, the <Command> tag text content inside <UserDefinedCommands> in shortcuts.xml is read by NppXml::value(aNode) (Parameters.cpp:3658) in the feedUserCmds() function and stored in UserCommand._cmd without any validation. When the user clicks the corresponding entry in the Run menu, NppCommands.cpp:4264 creates a Command object with string2wstring(ucmd.getCmd()) and calls run(),

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-06-26
Last modified	2026-06-30

Publisher (CNA): GitHub, Inc. · Vendor: notepad-plus-plus

Last updated 2026-06-30 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-26 21:16 UTCPublished CVE record published
2026-06-30 05:19 UTCUpdated Record last modified

notepad-plus-plus notepad\+\+ UPGRADE

Affected: < 8.9.6.1

Fixed in: 8.9.6.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy notepad++ || rpm -q notepad++ || notepad++ --version

2. UPGRADE to 8.9.6.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade notepad++

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade notepad++

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-48800?

notepad\+\+: upgrade to 8.9.6.1. Exact commands for each OS are on this page.

Is CVE-2026-48800 being exploited?

CVE-2026-48800 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-48800 affect?

CVE-2026-48800 affects notepad\+\+. Severity is high (CVSS 7.8). Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, the <Command> tag text content inside <UserDefinedCommands> in shortcuts.xml is read by NppXml::value(aNode) (Parameters.cpp:3658) in the feedUserCmds() function and

How urgent is CVE-2026-48800?

Priority 35/100. High severity; Public exploit reference

Software pages

Notepad++ vulnerabilities

Related CVEs

CVE-2026-5525 MEDIUM 6.0 DOWNGRADE A stack-based buffer overflow vulnerability exists in Notepad++ version 8.9.3 in the file drop handler compone
CVE-2026-52885 MEDIUM 6.3 UPGRADE Notepad++ is a free and open-source source code editor
CVE-2026-52884 HIGH 7.8 DOWNGRADE Notepad++ is a free and open-source source code editor
CVE-2026-48778 HIGH 7.8 UPGRADE Notepad++ is a free and open-source source code editor
CVE-2026-48770 MEDIUM 5.0 UPGRADE Notepad++ is a free and open-source source code editor

References

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