CVE-2023-5307: Photos and Files Contest Gallery – Contact Form < 21.2.8.1 - Unauthenticated Stored XSS via HTTP Headers

Severity: medium (CVSS 6.1 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: 2023-10-31 · updated 2026-06-17
Weakness: CWE-79

Description

The Photos and Files Contest Gallery WordPress plugin before 21.2.8.1 does not sanitise and escape some parameters, which could allow unauthenticated users to perform Cross-Site Scripting attacks via certain headers.

Affected products

Contest Gallery Pro: before 21.2.8.1 — fixed in 21.2.8.1

How to fix

Upgrade to a fixed version: Contest Gallery Pro 21.2.8.1. Check the vendor advisory for mitigations.

References

https://research.cleantalk.org/cve-2023-5307-photos-and-files-contest-gallery-contact-form-21-2-8-1-unauthenticated-stored-xss-via-http-headers
https://wpscan.com/vulnerability/6fac1e09-21ab-430d-b56d-195e7238c08c
https://research.cleantalk.org/cve-2023-5307-photos-and-files-contest-gallery-contact-form-21-2-8-1-unauthenticated-stored-xss-via-http-headers
https://wpscan.com/vulnerability/6fac1e09-21ab-430d-b56d-195e7238c08c

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