WordPress security changelog
HIGH CVE-2020-35937 Modified

Post Grid: Cross-site scripting

Post Grid is affected by cross-site scripting. Exploitation requires an authenticated WordPress account. Injected script can execute in the affected site's origin when the vulnerable output is viewed.

CVE / CNA score 7.5 CVSS 3.1 · cve@mitre.org
NVD score 8.0 CVSS 3.1 · nvd@nist.gov
Component
Post Grid
Plugin slug
post-grid
Affected
See vendor advisory
Safe version
See mitigation notes
Published
Jan 01, 2021
Weakness
CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Jan 01, 2021 and is one of 28 known issues for this plugin.

Update, patch or deactivate.

Update Post Grid to a release outside the affected range, or disable and remove it until a fixed version is available.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Technical description

Stored Cross-Site Scripting (XSS) vulnerabilities in the Team Showcase plugin before 1.22.16 for WordPress allow remote authenticated attackers to import layouts including JavaScript supplied via a remotely hosted crafted payload in the source parameter via AJAX. The action must be set to team_import_xml_layouts.

CVE / CNA vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Primary and upstream sources