How severe is CVE-2025-26589?

CVE-2025-26589 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-2025-26589 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-26589?

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-2025-26589 have an EU (EUVD) identifier?

Yes. CVE-2025-26589 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5610.

When was CVE-2025-26589 published?

CVE-2025-26589 was published on 2025-03-03 and last updated on 2026-06-17.

CVE-2025-26589

CVE-2025-26589 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% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-5610
Weakness: CWE-79
Published: 2025-03-03
Last modified: 2026-06-17

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Cristopher Dino IE CSS3 Support ie-css3-support allows Reflected XSS.This issue affects IE CSS3 Support: from n/a through <= 2.0.1.

Frequently asked questions

What is CVE-2025-26589?: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Cristopher Dino IE CSS3 Support ie-css3-support allows Reflected XSS.This issue affects IE CSS3 Support: from n/a through <= 2.0.1.
How severe is CVE-2025-26589?: CVE-2025-26589 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-2025-26589 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-26589?: 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-2025-26589 have an EU (EUVD) identifier?: Yes. CVE-2025-26589 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5610.
When was CVE-2025-26589 published?: CVE-2025-26589 was published on 2025-03-03 and last updated on 2026-06-17.

References

https://patchstack.com/database/Wordpress/Plugin/ie-css3-support/vulnerability/wordpress-ie-css3-support-plugin-2-0-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve

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