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Vulnerability record · CVE-2026-3844 · published 23 April 2026

CVE-2026-3844: Unrestricted file upload vulnerability

The Breeze Cache plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'fetch_gravatar_from_remote' function in all versions up to, and including, 2.4.4. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. The vulnerability can only be exploited if "Host Files Locally - Gravatars" is enabled, which is disabled by default.

9.8 CVSS 3.1 Critical EPSS 3.8% · top 10.5% CWE-434 · Unrestricted file upload Deferred
9.8CVSS 3.1 base score
3.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

The Breeze Cache plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'fetch_gravatar_from_remote' function in all versions up to, and including, 2.4.4. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. The vulnerability can only be exploited if "Host Files Locally - Gravatars" is enabled, which is disabled by default.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://plugins.trac.wordpress.org/browser/breeze/tags/2.4.1/inc/class-breeze-cache-cronjobs.php#L119
https://plugins.trac.wordpress.org/browser/breeze/tags/2.4.1/inc/class-breeze-cache-cronjobs.php#L89
https://plugins.trac.wordpress.org/changeset/3511463/breeze
https://www.wordfence.com/threat-intel/vulnerabilities/id/e342b1c0-6e7f-4e2c-8a52-018df12c12a0?source=cve

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Source: NIST National Vulnerability Database (record CVE-2026-3844), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.