How severe is CVE-2025-23459?

CVE-2025-23459 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-23459 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-23459?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-23459 have an EU (EUVD) identifier?

Yes. CVE-2025-23459 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-8199.

When was CVE-2025-23459 published?

CVE-2025-23459 was published on 2025-03-26 and last updated on 2026-06-17.

CVE-2025-23459

CVE-2025-23459 is a high-severity vulnerability with a CVSS 3.x base score of 7.1. 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: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-8199
Weakness: CWE-79
Published: 2025-03-26
Last modified: 2026-06-17

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NsThemes NS Simple Intro Loader ns-simple-intro-loader allows Reflected XSS.This issue affects NS Simple Intro Loader: from n/a through <= 2.2.3.

Frequently asked questions

What is CVE-2025-23459?: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NsThemes NS Simple Intro Loader ns-simple-intro-loader allows Reflected XSS.This issue affects NS Simple Intro Loader: from n/a through <= 2.2.3.
How severe is CVE-2025-23459?: CVE-2025-23459 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-23459 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-23459?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-23459 have an EU (EUVD) identifier?: Yes. CVE-2025-23459 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-8199.
When was CVE-2025-23459 published?: CVE-2025-23459 was published on 2025-03-26 and last updated on 2026-06-17.

References

https://patchstack.com/database/Wordpress/Plugin/ns-simple-intro-loader/vulnerability/wordpress-ns-simple-intro-loader-plugin-2-2-3-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve

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