CVE-2023-0097: Post Grid, Post Carousel, & List Category Posts < 2.4.19 - Contributor+ Stored XSS

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-01-30 · updated 2026-06-17
Weakness: CWE-79

Description

The Post Grid, Post Carousel, & List Category Posts WordPress plugin before 2.4.19 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.

Affected products

Smart Post Show: before 2.4.19 — fixed in 2.4.19

How to fix

Upgrade to a fixed version: Smart Post Show 2.4.19. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/19379f08-d667-4b1e-a774-0f4a17ad7bff
https://wpscan.com/vulnerability/19379f08-d667-4b1e-a774-0f4a17ad7bff

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