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Description

The Clearfy Cache – WordPress optimization plugin, Minify HTML, CSS & JS, Defer plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.4.0. This is due to missing nonce validation on the "wbcr_upm_change_flag" function. This makes it possible for unauthenticated attackers to disable plugin/theme update notifications via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

PUBLISHED Reserved 2025-11-26 | Published 2026-01-09 | Updated 2026-01-09 | Assigner Wordfence




MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Problem types

CWE-352 Cross-Site Request Forgery (CSRF)

Product status

Default status
unaffected

* (semver)
affected

Timeline

2025-11-18:Discovered
2025-11-26:Vendor Notified
2026-01-08:Disclosed

Credits

Dmitrii Ignatyev finder

References

www.wordfence.com/...-c6ec-4be6-967f-60bf940fa30e?source=cve

research.cleantalk.org/cve-2025-13749/

plugins.trac.wordpress.org/changeset/3421009/clearfy

cve.org (CVE-2025-13749)

nvd.nist.gov (CVE-2025-13749)

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