How severe is CVE-2025-30903?

CVE-2025-30903 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-30903 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-30903?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-30903 have an EU (EUVD) identifier?

Yes. CVE-2025-30903 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-8308.

When was CVE-2025-30903 published?

CVE-2025-30903 was published on 2025-03-27 and last updated on 2026-06-17.

CVE-2025-30903

CVE-2025-30903 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-8308
Weakness: CWE-79
Published: 2025-03-27
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-30903?: 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.
How severe is CVE-2025-30903?: CVE-2025-30903 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-30903 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-30903?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-30903 have an EU (EUVD) identifier?: Yes. CVE-2025-30903 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-8308.
When was CVE-2025-30903 published?: CVE-2025-30903 was published on 2025-03-27 and last updated on 2026-06-17.

References

https://patchstack.com/database/Wordpress/Plugin/syntaxhighlighter/vulnerability/wordpress-syntaxhighlighter-evolved-plugin-3-7-1-cross-site-scripting-xss-vulnerability?_s_id=cve

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