What is CVE-2025-26763?

CVE-2025-26763 is a critical-severity vulnerability in Metaslider Responsive Slider By, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-02-22.

How severe is CVE-2025-26763?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-26763 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Metaslider Responsive Slider By

CVE-2025-26763

Deserialization of Untrusted Data vulnerability in MetaSlider Responsive Slider by MetaSlider ml-slider allows Object Injection.This issue affects Responsive Slider by MetaSlider: from n/a through <= 3.94.0.

Vulnerability class: Insecure Deserialization

EPSS: 0.001 (28.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Metaslider Responsive Slider By — versions 0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

20142995/nuclei-templates

References

patchstack.com/database/Wordpress/Plugin/ml-slider/vulnerability/wordpress-slid… (vdb-entry)

Frequently asked questions

What is CVE-2025-26763?: CVE-2025-26763 is a critical-severity vulnerability in Metaslider Responsive Slider By, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-02-22.
How severe is CVE-2025-26763?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-26763 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.