CVE-2023-4035: Simple Blog Card < 1.31 - Contributor+ Stored XSS via Shortcode

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-08-30 · updated 2026-06-17

Description

The Simple Blog Card WordPress plugin before 1.31 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks

Affected products

Simple Blog Card: before 1.31 — fixed in 1.31

How to fix

Upgrade to a fixed version: Simple Blog Card 1.31. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/8fd9192a-2d08-4127-adcd-87fb1ea8d6fc
https://wpscan.com/vulnerability/8fd9192a-2d08-4127-adcd-87fb1ea8d6fc

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