CVE-2021-24239 json
Pie Register < 3.7.0.1 - Reflected Cross-Site Scripting (XSS)
published 2021-04-22 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11153
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 75%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
The Pie Register – User Registration Forms. Invitation based registrations, Custom Login, Payments WordPress plugin before 3.7.0.1 does not sanitise the invitaion_code GET parameter when outputting it in the Activation Code page, leading to a reflected Cross-Site Scripting issue.
Patch / fix
Exploit prediction
1.60% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template WordPress Pie Register <3.7.0.1 - Cross-Site Scripting nuclei detection template
- wpscan.com https://wpscan.com/vulnerability/f1b67f40-642f-451e-a67a-b7487918ee34 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected products
- Unknown Pie Register – User Registration Forms. Invitation based registrations, Custom Login, Payments
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
plugins.trac.wordpress.org
/changeset/2507536/
patch, third-party-advisory
-
wpscan.com
/vulnerability/f1b67f40-642f-451e-a67a-b7487918ee34
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24239
- NVD CVE-2021-24239
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