Sign-up Sheets <= 2.3.2 - Unauthenticated PHP Object Injection
| CVE | CVE-2025-49393 |
|---|---|
| CVSS | 8.1 (High) |
| Publicly Published | September 23, 2025 |
| Last Updated | September 30, 2025 |
| Researcher |
ChuongVN
|
Description
The Sign-up Sheets plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 2.3.2 via deserialization of untrusted input. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
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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 2.3.3, or a newer patched version |
| Affected Version |
|
| Patched Version |
|
Recent vulnerabilities in Sign-up Sheets
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | Sign-up Sheets <= 2.3.3 - Cross-Site Request Forgery | CVE-2025-49391 | Nabil Irawan | August 20, 2025 | |
| 2 | Sign-up Sheets <= 2.3.0.1 - Unauthenticated Arbitrary Shortcode Execution | CVE-2025-26996 | Phan Trong Quan | April 15, 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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