CVE-2021-47751Public exploitNetwork attack vector

Arbitrary web-root file write via path traversal

Published Jan 13, 2026 · Updated Jan 13, 2026

Path traversal in CuteEditor for PHP 6.6 allows remote attackers to write HTML files within arbitrary web-root directories. In browse_Template.php, renamefile passes attacker-controlled filename and newname query parameters through ServerMapPath() to rename() without rejecting traversal segments. Reachability requires access to the editor functions and permission to upload and rename templates; successful exploitation relocates an HTML file outside the template directory but within the web root.

CVSS severity5.3
Medium
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Path traversal in CuteEditor for PHP 6.6 allows remote attackers to write HTML files within arbitrary web-root directories. In browse_Template.php, renamefile passes attacker-controlled filename and newname query parameters through ServerMapPath() to rename() without rejecting traversal segments. Reachability requires access to the editor functions and permission to upload and rename templates; successful exploitation relocates an HTML file outside the template directory but within the web root.

The record

CVE
CVE-2021-47751
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
Richscripts Inc.
Product
CuteEditor for PHP
Classifications
CWE-22
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=6.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Richscripts Inc. · CuteEditor for PHPversion=0 <=6.6

Published CVSS scores

5.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo