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CVE-2026-8875

MEDIUM 6.4 CVSS 3.1
Published
May 27, 2026
Last modified
June 17, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

The Easy Prism Syntax Highlighter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'code' (and 'c') shortcode in versions up to, and including, 1.0.2. This is due to insufficient input sanitization and output escaping on user supplied shortcode attributes in the shortcode() function, which concatenates the first positional attribute directly into the class attribute of the generated <pre>/<code> HTML without calling esc_attr() or any other escaping function. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • cuamckuy Easy Prism Syntax Highlighter — Up to and including 1.0.2

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/easy-prism-syntax-highlighter/trunk/PrismSyntaxHighlither.php#L116
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/easy-prism-syntax-highlighter/trunk/PrismSyntaxHighlither.php#L123
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/aa690c4d-15c4-43bc-b8f7-017b7741c5cd?source=cve
  • nvd.nist.gov Official NVD record