CVE-2018-18950: KindEditor through 4.1.11 has a path traversal vulnerability in php/upload_json.php

Q: How do I fix CVE-2018-18950?

kindeditor: upgrade to newer than 4.1.11. Exact commands for each OS are on this page.

Q: Is CVE-2018-18950 being exploited?

CVE-2018-18950 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-2018-18950 affect?

CVE-2018-18950 affects kindeditor. Severity is high (CVSS 7.5). KindEditor through 4.1.11 has a path traversal vulnerability in php/upload_json.php. Anyone can browse a file or directory in the kindeditor/attached/ folder via the path parameter without authentication.

Q: How urgent is CVE-2018-18950?

Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2018-18950 is a high-severity flaw (CVSS 7.5) affecting kindeditor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

KindEditor through 4.1.11 has a path traversal vulnerability in php/upload_json.php. Anyone can browse a file or directory in the kindeditor/attached/ folder via the path parameter without authentication.

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	2.1% (top 18%)
CISA exploited list	No
Weakness	CWE-22
Published	2018-11-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: kindeditor

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

Am I affected?

Timeline

2018-11-05 09:29 UTCPublished CVE record published
2026-06-17 01:48 UTCUpdated Record last modified

kindeditor kindeditor UPGRADE

Affected: <= 4.1.11

Fixed in: newer than 4.1.11

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy kindeditor || rpm -q kindeditor || kindeditor --version

2. UPGRADE to newer than 4.1.11 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade kindeditor

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade kindeditor

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-2018-18950?

kindeditor: upgrade to newer than 4.1.11. Exact commands for each OS are on this page.

Is CVE-2018-18950 being exploited?

CVE-2018-18950 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-2018-18950 affect?

CVE-2018-18950 affects kindeditor. Severity is high (CVSS 7.5). KindEditor through 4.1.11 has a path traversal vulnerability in php/upload_json.php. Anyone can browse a file or directory in the kindeditor/attached/ folder via the path parameter without authentication.

How urgent is CVE-2018-18950?

Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2021-42228 HIGH 8.8 UPGRADE A Cross Site Request Forgery (CSRF) vulnerability exists in KindEditor 4.1.x, as demonstrated by examples/uplo
CVE-2021-42227 MEDIUM 6.1 UPGRADE Cross SIte Scripting (XSS) vulnerability exists in KindEditor 4.1.x via a Google search inurl:/examples/upload
CVE-2021-37267 MEDIUM 6.1 MITIGATE Cross Site Scripting (XSS) vulnerability exists in all versions of KindEditor, which can be exploited by an at
CVE-2021-30086 MEDIUM 6.1 DOWNGRADE Cross Site Scripting (XSS) vulnerability exists in KindEditor (Chinese versions) 4.1.12, which can be exploite
CVE-2020-28717 MEDIUM 6.1 DOWNGRADE Cross Site Scripting (XSS) vulnerability in content1 parameter in demo.jsp in kindsoft kindeditor version 4.1.

References

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