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.
Published: 2026-05-27
Score: 6.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 27 May 2026 11:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 27 May 2026 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Cuamckuy
Cuamckuy easy Prism Syntax Highlighter
Wordpress
Wordpress wordpress
Vendors & Products Cuamckuy
Cuamckuy easy Prism Syntax Highlighter
Wordpress
Wordpress wordpress

Wed, 27 May 2026 06:30:00 +0000

Type Values Removed Values Added
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.
Title Easy Prism Syntax Highlighter <= 1.0.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


Subscriptions

Cuamckuy Easy Prism Syntax Highlighter
Wordpress Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-05-27T10:33:49.958Z

Reserved: 2026-05-18T20:26:39.696Z

Link: CVE-2026-8875

cve-icon Vulnrichment

Updated: 2026-05-27T10:33:44.397Z

cve-icon NVD

Status : Deferred

Published: 2026-05-27T07:16:17.010

Modified: 2026-06-17T11:04:33.440

Link: CVE-2026-8875

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T10:07:05Z

Weaknesses