MaxSite CMS through 109.6 PHP Object Injection via ci_session
MaxSite CMS through 109.6 passes the ci_session cookie to unserialize() without class restrictions, allowing unauthenticated attackers to inject PHP objects. Attackers can forge valid session cookies using the hardcoded encryption key to trigger magic methods and corrupt application state or achieve code execution if gadget classes exist.
CVE-2026-87930
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-87930
MaxSite CMS
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/maxsite/cms",
"vendor": "MaxSite",
"product": "MaxSite CMS",
"versions": [
{
"status": "affected",
"version": "0.78",
"versionType": "custom",
"lessThanOrEqual": "109.6"
}
],
"packageURL": "pkg:github/maxsite/cms",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-87930
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #1609 · Revision 1
- Added to Heist Feed
- Publisher date