Answer in brief
CVE-2026-87928 records a Medium severity (CVSS 5.1) vulnerability in MaxSite CMS 0.94 through 109.6 HTML Upload XSS via admin_page. The current sources do not mark it as known exploited. The current feed maps MaxSite/MaxSite CMS (generic), MaxSite/MaxSite CMS (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 5.1. 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 MaxSite/MaxSite CMS (generic), MaxSite/MaxSite CMS (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| MaxSite/MaxSite CMSgeneric | 0.94 | Not reported |
| MaxSite/MaxSite CMSgeneric | >=0.94 <=109.6 | Not reported |
Published upstream
Sep 9, 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 9, 2026
MaxSite CMS versions 0.94 through 109.6 contain a cross-site scripting vulnerability in the admin_page upload handler that allows any logged-in user to upload HTML files. Attackers can upload HTML containing malicious scripts to the uploads/_pages/ directory, which executes in visitors' browsers when the file is accessed, enabling persistent stored cross-site scripting attacks.
Quoted source text, attributed separately from HOL analysis.