PT-2021-11870 · WordPress · Post Grid

Published 2021-01-01 · Updated 2021-01-11 · CVE-2020-35936

Positive Technologies (AI Summary)

CVSS v3.1

8.0

High

Base vector

AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Post Grid plugin versions prior to 2.0.73 for WordPress

Description: The issue allows remote authenticated attackers to import layouts including JavaScript supplied via a remotely hosted crafted payload in the source parameter via AJAX, where the action must be set to post grid import xml layouts. This enables Stored Cross-Site Scripting (XSS) attacks.

Recommendations: For versions prior to 2.0.73, update to version 2.0.73 or later to resolve the issue. As a temporary workaround, consider restricting access to the AJAX endpoint or disabling the import layout feature until the update is applied. Avoid using the source parameter in the affected AJAX endpoint until the issue is resolved.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2020-35936

Affected Products

Post Grid

References · 5

• 🔥 https://wordfence.com/blog/2020/10/high-severity-vulnerabilities-in-post-grid-and-team-showcase-plugins · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-35936 · Security Note
• https://osv.dev/vulnerability/CVE-2020-35936 · Vendor Advisory
• https://t.me/cibsecurity/21491 · Telegram Post
• https://t.me/cvenotify/8068 · Telegram Post