High

Connect CMS has Stored Cross-site Scripting (XSS) in the File Field of its Form Plugin

  • Disclosed: 23.03.2026
  • Updated: 11.10.2026 10:22

Security Advisory — Form Plugin (Stored XSS)

Summary

A Stored Cross-site Scripting (XSS) issue exists in the file field of the Form Plugin.

Affected Versions

  • 1.x series: <= 1.41.0
  • 2.x series: <= 2.41.0

Patched Versions

  • 1.41.1
  • 2.41.1

Description

In the file field of the Form Plugin, Stored Cross-site Scripting (XSS) could occur. If exploited, arbitrary script could run in an administrator's browser, which may lead to unauthorized actions or information theft. Users affected by this vulnerability should update to a fixed version.

Solution

Update to the fixed version. For the 1.x series, update to 1.41.1 or later. For the 2.x series, update to 2.41.1 or later.

Credits

OpenSource WorkShop thanks Sho Odagiri (小田切 祥) of GMO Cybersecurity by Ierae, Inc. for reporting this vulnerability.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package opensource-workshop/connect-cms < 1.41.1, >= 2.0.0, < 2.41.1 1.41.1, 2.41.1

References

CVSS score 8.2/10
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L
Weakness (CWE)
CWE-434, CWE-79
Platform
Composer
Package
opensource-workshop/connect-cms
Disclosed
23.03.2026
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-mv3p-7p89-wq9p - CC BY 4.0

Vulnerability history: opensource-workshop/connect-cms

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (9) in the archive
Total entries
9
First → latest
07.2023 03.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 6
  • Medium 3

Disclosures per year

  1. 2023: 1
  2. 2024: 0
  3. 2025: 2
  4. 2026: 6
Severity:
  1. High · 7.5 CVE-2026-32299 < 1.41.1, >= 2.0.0, < 2.41.1 1.41.1, 2.41.1
  2. Connect CMS has Stored Cross-site Scripting (XSS) in the File Field of its Form Plugin this entry
    High · 8.2 CVE-2026-32278 < 1.41.1, >= 2.0.0, < 2.41.1 1.41.1, 2.41.1
  3. High · 8.7 CVE-2026-32277 >= 1.35.0, < 1.41.1, >= 2.35.0, < 2.41.1 1.41.1, 2.41.1
  4. High · 8.8 CVE-2026-32276 < 1.41.1, >= 2.0.0, < 2.41.1 1.41.1, 2.41.1

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