What is CVE-2025-59573?

CVE-2025-59573 is a medium-severity vulnerability in Cozythemes Cozy Blocks, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 5.3/10. Published 2025-09-22.

How severe is CVE-2025-59573?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2025-59573 known to be exploited?

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

XSS in Cozythemes Cozy Blocks

CVE-2025-59573

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in CozyThemes Cozy Blocks cozy-addons allows Code Injection.This issue affects Cozy Blocks: from n/a through <= 2.1.29.

EPSS: 0.002 (13.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Cozythemes Cozy Blocks — versions 0

Weakness classification (CWE)

CWE-80 — Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2025-59573?: CVE-2025-59573 is a medium-severity vulnerability in Cozythemes Cozy Blocks, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 5.3/10. Published 2025-09-22.
How severe is CVE-2025-59573?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2025-59573 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.