CVE-2026-3844Known exploitationPublic exploitNetwork attack vector

Unauthenticated PHP execution via unchecked Gravatar download

Published Apr 23, 2026 · Updated Apr 23, 2026

Arbitrary file upload in Cloudways Breeze Cache 2.4.4 and earlier allows remote attackers to place PHP files via crafted WordPress comments. Breeze_Cache_CronJobs extracts an attacker-controlled URL from a comment author field, and fetch_gravatar_from_remote downloads it into the public Gravatar cache without validating its type or extension. Exploitation requires the default-disabled Host Files Locally - Gravatars option and permits unauthenticated server-side PHP execution.

CVSS severity9.8
Critical
EPSS probability27.70%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in Cloudways Breeze Cache 2.4.4 and earlier allows remote attackers to place PHP files via crafted WordPress comments. Breeze_Cache_CronJobs extracts an attacker-controlled URL from a comment author field, and fetch_gravatar_from_remote downloads it into the public Gravatar cache without validating its type or extension. Exploitation requires the default-disabled Host Files Locally - Gravatars option and permits unauthenticated server-side PHP execution.

The record

CVE
CVE-2026-3844
Published
Apr 23, 2026
Updated
Apr 23, 2026
Vendor
Cloudways
Product
Breeze
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 22, 2026Exploitation reportedWordfence-observed Breeze Cache mass exploitation
  2. Apr 23, 2026CVE publishedPublication date reported by the CVE source.
  3. Apr 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.4.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Cloudways · Breezeversion=0 <=2.4.4

Published CVSS scores

9.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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