WordPress Custom Login And Signup Widget plugin <= 1.0 - Arbitrary Code Execution vulnerability

9.1 CVSS

Vulnerability Description

Improper Control of Generation of Code ('Code Injection') vulnerability in bitto.kazi Custom Login And Signup Widget custom-login-and-signup-widget allows Code Injection.This issue affects Custom Login And Signup Widget: from n/a through <= 1.0.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Bao - BlueRock | Patchstack Bug Bounty Program

References

https://patchstack.com/database/Wordpress/Plugin/custom-login-and-signup-widget/vulnerability/wordpress-custom-login-and-signup-widget-plugin-1-0-arbitrary-code-execution-vulnerability?_s_id=cve

Affected Vendor

bitto.kazi

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Affected Software

Custom Login And Signup Widget

Vulnerable Versions:

Timeline

Official Publish: July 1st, 2025

Last Modified: April 28th, 2026

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Weaknesses (CWE)

CWE-94

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

Initial Access

T1059 Command and Scripting Interpreter

Execution

T1505.003 Web Shell

Persistence

T1105 Ingress Tool Transfer

Command and Control

T1565.002 Stored Data Manipulation

Impact