CVE-2020-36706: The Simple:Press – WordPress Forum Plugin for WordPress is vulnerable to arbitrary file uploads due to missing

Q: How do I fix CVE-2020-36706?

simple\: upgrade to 6.6.1. Exact commands for each OS are on this page.

Q: Is CVE-2020-36706 being exploited?

CVE-2020-36706 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-2020-36706 affect?

CVE-2020-36706 affects simple\. Severity is critical (CVSS 9.8). The Simple:Press – WordPress Forum Plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the ~/admin/resources/jscript/ajaxupload/sf-uploader.php file in versions up to, and including, 6.6.0. Th

Q: How urgent is CVE-2020-36706?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2020-36706 is a critical-severity flaw (CVSS 9.8) affecting simple\. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Simple:Press – WordPress Forum Plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the ~/admin/resources/jscript/ajaxupload/sf-uploader.php file in versions up to, and including, 6.6.0. This makes it possible for attackers to upload arbitrary files on the affected sites server which may make remote code execution possible.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.2% (top 18%)
CISA exploited list	No
Weakness	CWE-434
Published	2023-10-20
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: simple-press

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

Am I affected?

Timeline

2023-10-20 07:15 UTCPublished CVE record published
2026-06-17 03:16 UTCUpdated Record last modified

simple-press simple\ UPGRADE

Affected: < 6.6.1

Fixed in: 6.6.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 6.6.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade simple

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-2020-36706?

simple\: upgrade to 6.6.1. Exact commands for each OS are on this page.

Is CVE-2020-36706 being exploited?

CVE-2020-36706 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-2020-36706 affect?

CVE-2020-36706 affects simple\. Severity is critical (CVSS 9.8). The Simple:Press – WordPress Forum Plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the ~/admin/resources/jscript/ajaxupload/sf-uploader.php file in versions up to, and including, 6.6.0. Th

How urgent is CVE-2020-36706?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities · PHP vulnerabilities

Related CVEs

CVE-2022-4031 LOW 3.8 UPGRADE The Simple:Press plugin for WordPress is vulnerable to arbitrary file modifications in versions up to, and inc
CVE-2022-4030 HIGH 8.1 UPGRADE The Simple:Press plugin for WordPress is vulnerable to Path Traversal in versions up to, and including, 6.8 vi
CVE-2022-4029 MEDIUM 4.7 UPGRADE The Simple:Press plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'sforum_[md5 has
CVE-2022-4028 MEDIUM 6.4 UPGRADE The Simple:Press plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'postitem' paramete
CVE-2022-4027 HIGH 7.2 UPGRADE The Simple:Press plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'postitem' paramete

References

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