TI-2021-03306 Aliases CVE-2021-4450 GHSA-w36w-mmqg-xf3r

Post Grid <= 2.1.12 - Contributor+ SQL Injection

MEDIUM 41CWE-89Published 2024-10-16 · Updated 2026-04-08

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: SQL injection
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-89.

Summary

The Post Grid plugin for WordPress is vulnerable to blind SQL Injection via post metadata in versions up to, and including, 2.1.12 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers with contributor-level permissions and above to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00486 42nd percentileScored 2026-11-07

Fix Fixed Post Grid (pickplugins): 2.1.13

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
PickPlugins	Post Grid	before 2.1.13	2.1.13	Patch available	CNA

Post Grid VendorPickPlugins Affected before 2.1.13 Fixed in 2.1.13 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:pickplugins:post_grid::::::wordpress::*	up to 2.1.12	Vulnerable	PickPlugins

cpe:2.3:a:pickplugins:post_grid:*:*:*:*:*:wordpress:*:* Versions up to 2.1.12 Vulnerable ·PickPlugins

Remediation

Fix · CNA Post Grid (pickplugins) Fixed in 2.1.13

Timeline

2026-10-02 Threatist record created from CVE-2021-4450
2026-10-03 Alias added: GHSA-w36w-mmqg-xf3r

References

Patch 1

https://plugins.trac.wordpress.org/changeset/2644269

Advisory 1

https://www.wordfence.com/threat-intel/vulnerabilities/id/a321b112-ce37-4a0e-800f-f3feef6ac799?source=cve

TI-2024-08948 Post Grid and Gutenberg Blocks < 2.2.93 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
TI-2024-00811 Combo Blocks < 2.2.76 - Unauthenticated Password Protected Posts Access CVSS 3.1MEDIUM 5.4
TI-2024-07651 Post Grid and Gutenberg Blocks 2.2.87 - 2.2.90 - Authenticated (Subscriber+) Privilege Escalation CVSS 3.1HIGH 8.8
TI-2020-18382 PHP Object injection vulnerabilities in the Team Showcase plugin before 1.22.16 for… CVSS 3.1HIGH 8.8
TI-2020-18381 PHP Object injection vulnerabilities in the Post Grid plugin before 2.0.73 for WordPress… CVSS 3.1HIGH 8.8
TI-2024-12450 Post Grid, Slider & Carousel Ultimate – with Shortcode, Gutenberg Block & Elementor… CVSS 3.1HIGH 8.8

See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences