Answer in brief
CVE-2026-89145 records a Low severity (CVSS 2.4) vulnerability in Flextype CMS 0.9.9 through 1.0.0-alpha.3 Stored XSS via Plugin Directory. The current sources do not mark it as known exploited. The current feed maps flextype/flextype (generic), flextype/flextype (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 2.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps flextype/flextype (generic), flextype/flextype (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| flextype/flextypegeneric | 0.9.9 | Not reported |
| flextype/flextypegeneric | >=0.9.9 <=1.0.0-alpha.3 | Not reported |
Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 11, 2026
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.
Quoted source text, attributed separately from HOL analysis.