What is CVE-2021-24440?

CVE-2021-24440 is a medium-severity vulnerability in Fetchdesigns Sign-Up Sheets, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2021-07-12.

How severe is CVE-2021-24440?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Is CVE-2021-24440 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Fetchdesigns Sign-Up Sheets

CVE-2021-24440

The Sign-up Sheets WordPress plugin before 1.0.14 did not sanitise or escape some of its fields when creating a new sheet, allowing high privilege users to add JavaScript in them, leading to a Stored Cross-Site Scripting issue. The payloads will be triggered when viewing the 'All Sheets' page in the admin dashboard

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (46.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Fetchdesigns Sign-up_sheets
Unknown Sign-up Sheets — versions 1.0.14

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

contact@wpscan.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-24440?: CVE-2021-24440 is a medium-severity vulnerability in Fetchdesigns Sign-Up Sheets, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2021-07-12.
How severe is CVE-2021-24440?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2021-24440 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.