Sign-up Sheets <= 2.3.0.1 - Unauthenticated Arbitrary Shortcode Execution
| CVE | CVE-2025-26996 |
|---|---|
| CVSS | 6.5 (Medium) |
| Publicly Published | April 15, 2025 |
| Last Updated | April 21, 2025 |
| Researcher |
Phan Trong Quan
- VNPT Cyber Immunity
|
Description
The The Sign-up Sheets plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 2.3.0.1. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.
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Vulnerability Details for Sign-up Sheets
| Software Type | Plugin |
|---|---|
| Software Slug | sign-up-sheets (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 2.3.1, or a newer patched version |
| Affected Version |
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| Patched Version |
|
Recent vulnerabilities in Sign-up Sheets
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | Sign-up Sheets <= 2.3.2 - Unauthenticated PHP Object Injection | CVE-2025-49393 | ChuongVN | September 23, 2025 | |
| 2 | Sign-up Sheets <= 2.3.3 - Cross-Site Request Forgery | CVE-2025-49391 | Nabil Irawan | August 20, 2025 | |
| 3 | Sign-up Sheets <= 2.2.12 - Reflected Cross-Site Scripting | CVE-2024-6020 | Bob Matyas | August 13, 2024 | |
| 4 | Sign-up Sheets <= 2.2.12 - Missing Authorization | CVE-2024-39654 | Joshua Chan | August 1, 2024 | |
| 5 | Sign-up Sheets <= 2.2.11.1 - Cross-Site Request Forgery | CVE-2024-31303 | Dhabaleshwar Das | April 5, 2024 | |
| 6 | Sign-up Sheets <= 2.2.8 - Cross-Site Request Forgery | CVE-2023-39165 | Nguyen Xuan Chien | August 7, 2023 | |
| 7 | Sign-up Sheets <= 1.0.13 - Authenticated CSV Injection | CVE-2021-24441 | Ajay Sandipan Thorbole | June 21, 2021 | |
| 8 | Sign-up Sheets <= 1.0.13 - Stored Cross-Site Scripting | CVE-2021-24440 | Ajay Sandipan Thorbole | June 21, 2021 |
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