CVE-2021-47751: CuteEditor for PHP (now referred to as Rich Text Editor) 6.6 contains a directory traversal vulnerability in t

Q: How do I fix CVE-2021-47751?

rich text editor: upgrade to newer than 6.6. Exact commands for each OS are on this page.

Q: Is CVE-2021-47751 being exploited?

CVE-2021-47751 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-47751 affect?

CVE-2021-47751 affects rich text editor. Severity is high (CVSS 7.5). 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 Serve

Q: How urgent is CVE-2021-47751?

Priority 51/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2021-47751 is a high-severity flaw (CVSS 7.5) affecting rich text editor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 42%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-01-13
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: phphtmledit

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-13 23:15 UTCPublished CVE record published
2026-06-17 04:18 UTCUpdated Record last modified

phphtmledit rich text editor UPGRADE

Affected: <= 6.6

Fixed in: newer than 6.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy rich-text-editor || rpm -q rich-text-editor || rich-text-editor --version

2. UPGRADE to newer than 6.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade rich-text-editor

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rich-text-editor

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-47751?

rich text editor: upgrade to newer than 6.6. Exact commands for each OS are on this page.

Is CVE-2021-47751 being exploited?

CVE-2021-47751 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-47751 affect?

CVE-2021-47751 affects rich text editor. Severity is high (CVSS 7.5). 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 Serve

How urgent is CVE-2021-47751?

Priority 51/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

References

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