CVE-2025-11521

Astra Security Suite – Firewall & Malware Scan <= 0.2 - Unauthenticated Arbitrary File Upload

Published Nov 11, 2025 CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed

Description

The Astra Security Suite – Firewall & Malware Scan plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient validation of remote URLs for zip downloads and an easily guessable key in all versions up to, and including, 0.2. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Analysis

Technical impact

The Astra Security Suite – Firewall & Malware Scan plugin for WordPress allows unauthenticated users to upload arbitrary files through the plugin’s remote zip download feature. Insufficient validation of the remote URL and a guessable key in all releases up to 0.2 enable attackers to place executable files on the server, which can subsequently allow remote code execution. The weakness corresponds to CWE‑285: Improper Privileges.

Affected Systems

Any WordPress installation running Astra Security Suite – Firewall & Malware Scan version 0.2 or earlier is vulnerable. The issue exists in all releases through including 0.2. Users of later community or paid tiers are not affected as the upload capability was removed or patched.

Risk and Exploitability

The CVSS base score of 8.1 indicates high impact, while the EPSS score of less than 1 % suggests a low probability of exploitation at present. The vulnerability is not listed in CISA’s KEV catalog. Attackers can abuse the plugin’s upload endpoint from any network location; authentication is not required to trigger the flaw, so the attack surface covers the entire public web server.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

astrasecuritysuite

Astra Security Suite – Firewall & Malware Scan

unaffected

Version	Status	Constraints
`0`	affected	≤ 0.2

No data.

Vendor	Product	Versions
Wordpress	Wordpress	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade Astra Security Suite – Firewall & Malware Scan to the latest available release (≥ 0.3) which removes the vulnerable upload mechanism.
If an upgrade is not immediately possible, delete or completely uninstall the plugin from the WordPress site to eliminate the risk.
Temporarily block external URL fetching or restrict the plugin’s upload functionality via firewall rules or .htaccess to prevent remote clients from triggering the download process until a patch is applied.

Generated by OpenCVE AI on April 21, 2026 at 01:41 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.517% probability within 30 days)

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://wordpress.org/plugins/getastra/
https://www.wordfence.com/threat-intel/vulnerabilities/id/f99a6b5c-e95d-49d0-a4b2-1d7188447da1?source=cve

History

Nov 12, 2025 8:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Nov 12, 2025 1:00 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Wordpress Wordpress wordpress
Vendors & Products		Wordpress Wordpress wordpress

Nov 11, 2025 3:45 AM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		The Astra Security Suite – Firewall & Malware Scan plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient validation of remote URLs for zip downloads and an easily guessable key in all versions up to, and including, 0.2. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
Title		Astra Security Suite – Firewall & Malware Scan <= 0.2 - Unauthenticated Arbitrary File Upload
Weaknesses		CWE-285
References		https://wordpress.org/plugins/getastra/ https://www.wordfence.com/threat-intel/vulnerabilities/id/f99a6b5c-e95d-49d0-a4b2-1d7188447da1?source=cve
Metrics		cvssV3_1 `{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}`