Loading vulnerability…
CVE-2026-57233 is a Zip Slip path traversal vulnerability in the WinGUp updater component used by Notepad++. The flaw arises because WinGUp's plugin extraction logic does not verify that archive entry paths remain within the intended destination directory during extraction. A crafted plugin package can therefore use traversal sequences to escape the target folder and overwrite files outside the expected extraction path, including another plugin's DLL. If the overwritten DLL is subsequently loaded by Notepad++, attacker-controlled code can execute within the Notepad++ process. The issue is fixed in Notepad++ 8.9.7.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Zip Slip path traversal vulnerability in the WinGUp updater component of Notepad++ that could allow arbitrary file overwrite during update extraction.
A Zip Slip path traversal vulnerability in the Notepad++ updater (WinGUp) that could allow arbitrary file overwrite during update extraction.
A Zip Slip vulnerability in WinGup plugin extraction for Notepad++ that allows a crafted plugin package to overwrite another plugin DLL and achieve code execution when the DLL is loaded.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.