CVE-2023-0423: WordPress Amazon S3 Plugin < 1.6 - Reflected XSS

Severity: medium (CVSS 4.8 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: 2023-04-10 · updated 2026-06-17

Description

The WordPress Amazon S3 Plugin WordPress plugin before 1.6 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

Affected products

WordPress Amazon S3 Plugin: before 1.6 — fixed in 1.6

How to fix

Upgrade to a fixed version: WordPress Amazon S3 Plugin 1.6. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/73d588d7-26ae-42e2-8282-aa02bcb109b6
https://wpscan.com/vulnerability/73d588d7-26ae-42e2-8282-aa02bcb109b6

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