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CVE-2023-0993: The Shield Security plugin for WordPress is vulnerable to Missing Authorization on the 'theme-plugin-file' AJA

27
Routine
MEDIUM 4.3UPGRADE

CVE-2023-0993 is a medium-severity flaw (CVSS 4.3) affecting shield security. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Shield Security plugin for WordPress is vulnerable to Missing Authorization on the 'theme-plugin-file' AJAX action in versions up to, and including, 17.0.17. This allows authenticated attackers to add arbitrary audit log entries indicating that a theme or plugin has been edited, and is also a vector for Cross-Site Scripting via CVE-2023-0992.

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score4.3 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.5% (top 54%)
CISA exploited listNo
WeaknessCWE-862
Published2023-06-09
Last modified2026-06-17
Publisher (CNA): Wordfence · Vendor: getshieldsecurity

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

Am I affected?

Timeline

getshieldsecurity shield security UPGRADE
Affected: <= 17.0.17
Fixed in: newer than 17.0.17
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy shield-security || rpm -q shield-security || shield-security --version
2. UPGRADE to newer than 17.0.17 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade shield-security
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade shield-security
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-2023-0993?

shield security: upgrade to newer than 17.0.17. Exact commands for each OS are on this page.

Is CVE-2023-0993 being exploited?

CVE-2023-0993 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-2023-0993 affect?

CVE-2023-0993 affects shield security. Severity is medium (CVSS 4.3). The Shield Security plugin for WordPress is vulnerable to Missing Authorization on the 'theme-plugin-file' AJAX action in versions up to, and including, 17.0.17. This allows authenticated attackers to add arbitrary audit log entries indicat

How urgent is CVE-2023-0993?

Priority 27/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

Related CVEs

References

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