How severe is CVE-2025-53349?

CVE-2025-53349 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-2025-53349 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-53349?

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-2025-53349 have an EU (EUVD) identifier?

Yes. CVE-2025-53349 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37993.

When was CVE-2025-53349 published?

CVE-2025-53349 was published on 2025-11-06 and last updated on 2026-06-17.

CVE-2025-53349

CVE-2025-53349 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% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-37993
Weakness: CWE-79
Published: 2025-11-06
Last modified: 2026-06-17

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Laborator Kalium kalium allows Reflected XSS.This issue affects Kalium: from n/a through <= 3.18.3.

Frequently asked questions

What is CVE-2025-53349?: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Laborator Kalium kalium allows Reflected XSS.This issue affects Kalium: from n/a through <= 3.18.3.
How severe is CVE-2025-53349?: CVE-2025-53349 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-2025-53349 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-53349?: 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-2025-53349 have an EU (EUVD) identifier?: Yes. CVE-2025-53349 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37993.
When was CVE-2025-53349 published?: CVE-2025-53349 was published on 2025-11-06 and last updated on 2026-06-17.

References

https://patchstack.com/database/Wordpress/Theme/kalium/vulnerability/wordpress-kalium-theme-3-18-3-cross-site-scripting-xss-vulnerability?_s_id=cve

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