How severe is CVE-2026-28099?

CVE-2026-28099 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-2026-28099 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-28099?

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-2026-28099 have an EU (EUVD) identifier?

Yes. CVE-2026-28099 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9754.

When was CVE-2026-28099 published?

CVE-2026-28099 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-28099

CVE-2026-28099 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% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9754
Weakness: CWE-79
Published: 2026-03-05
Last modified: 2026-06-17

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in LambertGroup UberSlider Ultra uberSlider_ultra allows Reflected XSS.This issue affects UberSlider Ultra: from n/a through <= 2.3.

Frequently asked questions

What is CVE-2026-28099?: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in LambertGroup UberSlider Ultra uberSlider_ultra allows Reflected XSS.This issue affects UberSlider Ultra: from n/a through <= 2.3.
How severe is CVE-2026-28099?: CVE-2026-28099 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-2026-28099 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-28099?: 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-2026-28099 have an EU (EUVD) identifier?: Yes. CVE-2026-28099 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9754.
When was CVE-2026-28099 published?: CVE-2026-28099 was published on 2026-03-05 and last updated on 2026-06-17.

References

https://patchstack.com/database/Wordpress/Plugin/uberSlider_ultra/vulnerability/wordpress-uberslider-ultra-plugin-2-3-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve

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