What is CVE-2021-25099?

CVE-2021-25099 is a medium-severity vulnerability in Givewp, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-02-21.

How severe is CVE-2021-25099?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-25099 known to be exploited?

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

XSS in Givewp

CVE-2021-25099

The GiveWP WordPress plugin before 2.17.3 does not sanitise and escape the form_id parameter before outputting it back in the response of an unauthenticated request via the give_checkout_login AJAX action, leading to a Reflected Cross-Site Scripting

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-02-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.021 (81.3th percentile), scored 2026-09-28.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

Givewp
Givewp – Donation Plugin And Fundraising Platform — versions 2.17.3

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

ARPSyndicate/kenzer-templates

References

wpscan.com/vulnerability/87a64b27-23a3-40f5-a3d8-0650975fee6f (Exploit, Third Party Advisory)
plugins.trac.wordpress.org/changeset/2659032 (Third Party Advisory, Release Notes)

Frequently asked questions

What is CVE-2021-25099?: CVE-2021-25099 is a medium-severity vulnerability in Givewp, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-02-21.
How severe is CVE-2021-25099?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-25099 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.