CVE-2026-89145
Flextype CMS 0.9.9 through 1.0.0-alpha.3 Stored XSS via Plugin Directory
- State
- Published
- Severity
- 2.4 Low
- Published
- Sep 11, 2026
- Updated
- Sep 11, 2026
- Reserved
- Sep 11, 2026
Description
Flextype CMS versions 0.9.9 through 1.0.0-alpha.3 fail to HTML-escape plugin directory names in the dependency error page rendered by getValidPluginsDependencies(). Attackers with write access to the plugins directory can create a plugin with HTML characters in its name to execute arbitrary scripts in users' browsers when dependency validation fails.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 2.4 Low | CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 4.2 Medium | CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
flextypeflextype |
|
References
- GitHub Issue #597issue-tracking
- https://github.com/flextype/flextypeproduct
- Plugins.php getValidPluginsDependencies() unescaped outputtechnical-description
- VulnCheck Advisory: Flextype CMS 0.9.9 through 1.0.0-alpha.3 Stored XSS via Plugin Directorythird-party-advisory
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