CVE-2025-30903

WordPress SyntaxHighlighter Evolved plugin <= 3.7.1 - Cross Site Scripting (XSS) vulnerability

6.5 Medium

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Alex Mills SyntaxHighlighter Evolved syntaxhighlighter allows DOM-Based XSS.This issue affects SyntaxHighlighter Evolved: from n/a through <= 3.7.1.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: Low

Exploit likelihood

0.30%Up 0.3 points since Mar 27, 2025

What each source reports

CVE List Score used 6.5

WordPress SyntaxHighlighter Evolved plugin <= 3.7.1 - Cross Site Scripting (XSS) vulnerability

Record: CVE-2025-30903
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2025-8308 6.5

Record: EUVD-2025-8308
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Updated: 2026-11-02

GitHub AdvisoriesGHSA-7v39-9g8v-3xw9 6.5

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')...

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Alex Mills SyntaxHighlighter Evolved allows DOM-Based XSS. This issue affects SyntaxHighlighter Evolved: from n/a through 3.7.1.

Record: GHSA-7v39-9g8v-3xw9
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

NVD 6.5

Record: CVE-2025-30903
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

Affected products

alex mills syntaxhighlighter evolved

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-30903 is a medium vulnerability (CVSS 6.5) in Alex Mills Syntaxhighlighter Evolved, published March 27, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 22nd percentile. No source names a fixed version.