CVE-2023-5237: Memberlite Shortcodes < 1.3.9 - 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: 2023-10-31 · updated 2026-06-17
Weakness: CWE-79

Description

The Memberlite Shortcodes WordPress plugin before 1.3.9 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admin.

Affected products

strangerstudios Memberlite Shortcodes: before 1.3.9 — fixed in 1.3.9

How to fix

Upgrade to a fixed version: strangerstudios Memberlite Shortcodes 1.3.9. Check the vendor advisory for mitigations.

References

https://research.cleantalk.org/cve-2023-5237-memberlite-shortcodes-stored-xss-via-shortcode
https://wpscan.com/vulnerability/a46d686c-6234-4aa8-a656-00a65c55d0b0
https://research.cleantalk.org/cve-2023-5237-memberlite-shortcodes-stored-xss-via-shortcode
https://wpscan.com/vulnerability/a46d686c-6234-4aa8-a656-00a65c55d0b0

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