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CVE-2023-5566

18
FAUCET Score

CVE-2023-5566 is a Stored Cross-Site Scripting (XSS) vulnerability affecting the Simple Shortcodes plugin for WordPress, versions up to and including 1.0.20. Authenticated attackers with contributor-level permissions or higher can inject malicious web scripts into pages via shortcodes due to insufficient input sanitization. This medium-severity vulnerability (CVSS 5.4) allows for client-side script execution when a user views an affected page, potentially leading to information disclosure or unauthorized actions. There is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.20CPE matchmatch criteria
cpe:2.3:a:simple_shortcodes_project:simple_shortcodes:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

6.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.1
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.64%
Probability of exploitation in next 30 days
EPSS Percentile
46.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0064 is in the 79th percentile among its peer group of 15,225 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

plugins.trac.wordpress.org / browser/smpl-shortcodes/tags/1.0.20/includes/shortcodes.php
Exploit
plugins.trac.wordpress.org / browser/smpl-shortcodes/tags/1.0.20/includes/shortcodes.php
Exploit
plugins.trac.wordpress.org / browser/smpl-shortcodes/tags/1.0.20/includes/shortcodes.php
Exploit
wordfence.com / threat-intel/vulnerabilities/id/a153d6b2-e3fd-42db-90ba-d899a07d60c1
Third Party Advisory