TI-2026-49352 Aliases CVE-2026-70650

Cross-site scripting in GetSimpleCMS-CE

MEDIUM 44CWE-79Published 2026-10-01 · Updated 2026-10-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · High · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. In versions 3.3.22 and prior, an authenticated stored Cross-Site Scripting (XSS) vulnerability exists in the page backup viewer (admin/backup-edit.php). Page fields are correctly HTML-encoded when a page is saved, but the backup viewer decodes them again (htmldecode() / strip_decode()) and prints the result without re-escaping. A user who can edit a page can store JavaScript in a page's Keywords, Description, Menu text or Content; it executes in the browser of any administrator who later views that page's backup, in the context of the admin control panel. At time of publication, there are no publicly available patches.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00258 17th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
GetSimpleCMS-CE	GetSimpleCMS-CE	up to 3.3.22	—	No fix listed	CNA

GetSimpleCMS-CE VendorGetSimpleCMS-CE Affected up to 3.3.22 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:getsimple-ce:getsimple_cms::::::::	—	—	GetSimpleCMS-CE

cpe:2.3:a:getsimple-ce:getsimple_cms:*:*:*:*:*:*:*:* Versions — — ·GetSimpleCMS-CE

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-70650
2026-10-06 CISA SSVC decision points changed
2026-10-06 Priority changed: LOW → MEDIUM

References

Other 1

https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-p6vf-2xr7-mcf4

TI-2024-36775 GetSimple CMS CE 3.3.19 suffers from arbitrary code execution in the template editing… CVSS 3.1CRITICAL 9.8
TI-2026-38921 GetSimple CMS: Predictable Password Reset Password Allows Administrator Account Takeover CVSS 3.1CRITICAL 9.1
TI-2025-30771 GetSimple CMS RCE in Edit component CVSS 4.0HIGH 8.6
TI-2026-40846 GetSimple CMS: Missing CSRF protection in UpdateCE allows forging a privileged server-side update request CVSS 3.1CRITICAL 9.6
TI-2026-40844 GetSimple CMS: CSRF, SSRF, and Unrestricted Zip Extraction CVSS 3.1CRITICAL 9.1
TI-2024-36777 GetSimple CMS CE 3.3.19 is vulnerable to Server-Side Request Forgery (SSRF) in the backend plugin module. CVSS 3.1HIGH 8.8

See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences