Cyber Resilience

CVE-2026-32536

Critical

Published: 25 March 2026

Published
25 March 2026
Modified
24 April 2026
KEV Added
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Patch
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CVSS Score v3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0026 17.0th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-32536 is a critical-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability. Its CVSS base score is 9.9 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 17.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2026-32536 is an Unrestricted Upload of File with Dangerous Type vulnerability (CWE-434) in the halfdata-paypal-green-downloads WordPress plugin, known as Green Downloads. This flaw allows attackers to upload malicious files and affects all versions from n/a through 2.08. The vulnerability carries a CVSS v3.1 base score of 9.9, indicating critical severity due to its network accessibility, low attack complexity, low privilege requirements, lack of user interaction, changed scope, and high impacts on confidentiality, integrity, and availability.

A low-privileged user, such as a registered WordPress user, can exploit this vulnerability remotely without user interaction. By uploading files with dangerous types, attackers can achieve arbitrary file upload, potentially leading to full server compromise through execution of malicious code, data exfiltration, modification of system files, or denial of service.

The Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/halfdata-paypal-green-downloads/vulnerability/wordpress-green-downloads-plugin-2-08-arbitrary-file-upload-vulnerability?_s_id=cve details this arbitrary file upload issue in Green Downloads version 2.08 and prior, recommending updates to patched versions where available or removal of the plugin if no patch exists.

OWASP Top 10 for Web (2025)

A06:2025 Insecure Design

EU & UK References

Vulnerability details

Unrestricted Upload of File with Dangerous Type vulnerability in halfdata Green Downloads halfdata-paypal-green-downloads allows Using Malicious Files.This issue affects Green Downloads: from n/a through <= 2.08.

CWE(s)
CWE-434

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1505.003 Web Shell Persistence
Adversaries may backdoor web servers with web shells to establish persistent access to systems.
attack.mitre.org →
Why these techniques?

Unrestricted arbitrary file upload (CWE-434) on public-facing WordPress plugin directly enables initial access via T1190 and subsequent web shell deployment for code execution via T1505.003.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2025-22654Shared CWE-434
CVE-2025-11948Shared CWE-434
CVE-2025-67260Shared CWE-434
CVE-2025-28915Shared CWE-434
CVE-2023-53956Shared CWE-434
CVE-2025-6058Shared CWE-434
CVE-2021-47819Shared CWE-434
CVE-2025-7852Shared CWE-434
CVE-2026-4883Shared CWE-434
CVE-2019-25630Shared CWE-434

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly mitigates unrestricted upload of dangerous file types by validating file inputs for type, content, and safety before acceptance into the WordPress plugin.

SI-9 Information Input Restrictions good match
prevent

Restricts the types and sources of file uploads to the system, preventing low-privileged users from submitting malicious files via the Green Downloads plugin.

SI-2 Flaw Remediation good match
prevent

Remediates the specific flaw in Green Downloads versions through 2.08 by identifying, patching, or removing the vulnerable plugin to eliminate the arbitrary file upload vulnerability.

References