Known vulnerabilities in Sign-up Sheets

Create online sign-up sheets for volunteers, events, and group scheduling.

9Reported vulnerabilities

8.1Highest CVSS score

2.3.4Latest version

1,000+Active installs

What to do now

Update Sign-up Sheets to 2.3.3 or later. 9 of these have a fixed version available. Updating resolves them.

Plugin last updated: May 21, 2026 / Tested up to WordPress: 7.0.4 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVE	Severity	Exploit probability next 30 days	Affected versions	Fixed in	Published
CVE-2021-24441	High 8	1.3%	Before 1.0.14	`1.0.14`	July 12, 2021
CVE-2024-6020	Medium 6.1	0.4%	Before 2.2.13	`2.2.13`	September 4, 2024
CVE-2021-24440	Medium 4.8	0.6%	Before 1.0.14	`1.0.14`	July 12, 2021
CVE-2025-49393	High 8.1	0.5%	2.3.2 and earlier	`2.3.3`	September 23, 2025
CVE-2025-26996	Medium 6.5	0.3%	2.3.0.1 and earlier	`2.3.1`	April 15, 2025
CVE-2024-39654	Medium 5.3	0.4%	2.2.12 and earlier	`2.2.13`	August 1, 2024
CVE-2025-49391	Medium 4.3	0.1%	2.3.3 and earlier	`2.3.3.1`	August 20, 2025
CVE-2024-31303	Medium 4.3	0.2%	2.2.11.1 and earlier	`2.2.12`	April 5, 2024
CVE-2023-39165	Medium 4.3	0.2%	2.2.8 and earlier	`2.2.9`	August 7, 2023

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.