What is the CVSS score of CVE-2021-47751?

CVE-2021-47751 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 0.3%.

Which versions of PHP are affected by CVE-2021-47751?

CVE-2021-47751 presents notable security risk, a path traversal vulnerability rated CVSS 7.5.

Is there a public PoC exploit available for CVE-2021-47751?

Yes, a public proof-of-concept exploit is available for CVE-2021-47751. Prioritise patching immediately. EPSS: 0.3%.

How to fix or mitigate CVE-2021-47751?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Review file handling controls and restrict upload directories.

PHP CVE-2021-47751

HIGH

Path Traversal (CWE-22)

2026-01-13 disclosure@vulncheck.com

PHP Path Traversal Rich Text Editor

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 02, 2026 - 16:16 vuln.today

Public exploit code

CVE Published

Jan 13, 2026 - 23:15 nvd

HIGH 7.5

DescriptionCVE.org

CuteEditor for PHP (now referred to as Rich Text Editor) 6.6 contains a directory traversal vulnerability in the browse template feature that allows attackers to write files to arbitrary web root directories. Attackers can exploit the ServerMapPath() function by renaming uploaded HTML files using directory traversal sequences to write files outside the intended template directory.

AnalysisAI

Technical ContextAI

Classified as CWE-22 (Path Traversal). Affects Rich Text Editor. CuteEditor for PHP (now referred to as Rich Text Editor) 6.6 contains a directory traversal vulnerability in the browse template feature that allows attackers to write files to arbitrary web root directories. Attackers can exploit the ServerMapPath() function by renaming uploaded HTML files using directory traversal sequences to write files outside the intended template directory.

RemediationAI

Monitor vendor advisories for a patch. Validate and sanitize file path inputs. Use allowlists. Restrict network access to the affected service where possible.

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CVE-2021-47751 vulnerability details – vuln.today

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PHP CVE-2021-47751

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

More from same product – last 7 days

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External POC / Exploit Code