How severe is CVE-2025-49342?

CVE-2025-49342 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-2025-49342 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-49342?

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-2025-49342 have an EU (EUVD) identifier?

Yes. CVE-2025-49342 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-205877.

When was CVE-2025-49342 published?

CVE-2025-49342 was published on 2025-12-31 and last updated on 2026-06-17.

CVE-2025-49342

CVE-2025-49342 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-352.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-205877
Weakness: CWE-352
Published: 2025-12-31
Last modified: 2026-06-17

Description

Cross-Site Request Forgery (CSRF) vulnerability in merzedes Custom Style custom-style allows Stored XSS.This issue affects Custom Style: from n/a through <= 1.0.

Frequently asked questions

What is CVE-2025-49342?: Cross-Site Request Forgery (CSRF) vulnerability in merzedes Custom Style custom-style allows Stored XSS.This issue affects Custom Style: from n/a through <= 1.0.
How severe is CVE-2025-49342?: CVE-2025-49342 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-2025-49342 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-49342?: 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-2025-49342 have an EU (EUVD) identifier?: Yes. CVE-2025-49342 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-205877.
When was CVE-2025-49342 published?: CVE-2025-49342 was published on 2025-12-31 and last updated on 2026-06-17.

References

https://patchstack.com/database/Wordpress/Plugin/custom-style/vulnerability/wordpress-custom-style-plugin-1-0-cross-site-request-forgery-csrf-vulnerability?_s_id=cve

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