What’s Vulnerable › Vulnerabilities

CVE-2023-6645: Post Grid Combo – 36+ Gutenberg Blocks <= 2.2.64 - Authenticated (Contributor+) Cross-Site Scripting

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-01-11 · updated 2026-06-17
• Weakness: CWE-79

Description

The Post Grid Combo – 36+ Gutenberg Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the custom JS parameter in all versions up to, and including, 2.2.64 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor access or higher to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• PickPlugins Post Grid Combo – 36+ Gutenberg Blocks: through 2.2.64

References

• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3010342%40post-grid%2Ftrunk&old=2999466%40post-grid%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/ab777672-6eef-4078-932d-24bb784107fa?source=cve
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3010342%40post-grid%2Ftrunk&old=2999466%40post-grid%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/ab777672-6eef-4078-932d-24bb784107fa?source=cve

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