Read the docs
TI-2021-22349 Aliases CVE-2021-47732GHSA-48vh-4wjm-4mch

CMSimple 5.2 Stored Cross-Site Scripting via Filebrowser External Input

Priority MEDIUM 56CWE-79Published · Updated

Key facts

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

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

Summary

CMSimple 5.2 contains a stored cross-site scripting vulnerability in the Filebrowser External input field that allows attackers to inject malicious JavaScript. Attackers can place unfiltered JavaScript code that executes when users click on Page or Files tabs, enabling persistent script injection.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00268 18th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
CmsimpleCMSimpleCMSimple 5.2—No fix listedCNA
  • CMSimple VendorCmsimple Affected CMSimple 5.2 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cmsimple:cmsimple:5.2:*:*:*:*:*:*:*5.2VulnerableCmsimple
  • cpe:2.3:a:cmsimple:cmsimple:5.2:*:*:*:*:*:*:* Versions 5.2 Vulnerable ·Cmsimple

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-47732
  2. 2026-10-03 Alias added: GHSA-48vh-4wjm-4mch

References

Exploit 1

Other 1

  • TI-2024-37939 CMSimple 5.16 allows the user to edit log.php file via print page. CVSS 3.1CRITICAL 9.1
  • TI-2024-37940 CMSimple 5.16 allows the user to read cms source code through manipulation of the file… CVSS 3.1HIGH 7.5
  • TI-2024-37938 Insecure Permissions vulnerability in CMSimple v.5.16 allows a remote attacker to obtain… CVSS 3.1HIGH 7.5
  • TI-2024-37937 An issue in CMSimple v.5.16 allows a remote attacker to obtain sensitive information via… CVSS 3.1HIGH 7.5
  • TI-2021-22352 CMSimple 5.4 Authenticated Remote Code Execution via Template Editing CVSS 4.0HIGH 8.6
  • TI-2021-22351 CMSimple 5.4 Authenticated Local File Inclusion Remote Code Execution CVSS 4.0HIGH 8.6
See all 18 →

Sources

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