CVE-2021-39357

Katalog CVE

CVSS 4.8 · Medium EPSS 0,92%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada zeen101 leaky paywall. Skor CVSS 3.1 4.8 (Medium) menurut NVD.

Deskripsi (NVD)

The Leaky Paywall WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via the ~/class.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 4.16.5. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.

Rincian

Terbit di NVD

21 Oktober 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

4.8 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

EPSS (30 hari)

0,92% peluang dieksploitasi; lebih tinggi dari 59,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://plugins.trac.wordpress.org/changeset/2615195/leaky-paywall/trunk/class.php patch · advisory pihak ketiga
• https://github.com/BigTiger2020/word-press/blob/main/Leaky%20Paywall.md exploit · advisory pihak ketiga
• https://wordfence.com/vulnerability-advisories/#CVE-2021-39357 advisory pihak ketiga