cuamckuy Easy Prism Syntax Highlighter Plugin up to 1.0.2 on WordPress Class cross site scripting

Summaryinfo

A vulnerability identified as problematic has been detected in cuamckuy Easy Prism Syntax Highlighter Plugin up to 1.0.2 on WordPress. This impacts an unknown function. Performing a manipulation of the argument Class results in cross site scripting. This vulnerability was named CVE-2026-8875. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic has been found in cuamckuy Easy Prism Syntax Highlighter Plugin up to 1.0.2 on WordPress. This affects some unknown functionality. The manipulation of the argument class with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

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 / 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.

The weakness was presented by Gilang Asra Bilhadi. The advisory is shared at wordfence.com. This vulnerability is uniquely identified as CVE-2026-8875 since 05/18/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• cuamckuy

Name

• Easy Prism Syntax Highlighter Plugin

Version

• 1.0.0
• 1.0.1
• 1.0.2

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion