CVE-2022-1756 Newsletter < 7.4.5 - Reflected Cross-Site Scripting

What is CVE-2022-1756?

CVE-2022-1756 is a medium-severity cross-site scripting vulnerability in Unknown Newsletter – Send awesome emails from WordPress, published on 13 Jun 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The Newsletter WordPress plugin before 7.4.5 does not sanitize and escape the $_SERVER['REQUEST_URI'] before echoing it back in admin pages. Although this uses addslashes, and most modern browsers automatically URLEncode requests, this is still vulnerable to Reflected XSS in older browsers such as Internet Explorer 9 or below.

Weakness: CWE-79

Which versions are affected by CVE-2022-1756?

It affects 1 product.

Products include Thenewsletterplugin Newsletter.

How do I fix CVE-2022-1756?

No fix has been published for CVE-2022-1756 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2022-1756 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-1756 exists.

Public exploit code: 1 Nuclei template.

Other vulnerabilities in Unknown Newsletter – Send awesome emails from WordPress

• CVE-2020-35933 Cross-site scripting in n/a Medium 6.5
• CVE-2024-5317 Newsletter <= 8.3.4 - Unauthenticated Stored Cross-Site Scripting via np1 Medium 6.4
• CVE-2023-4772 Newsletter <= 7.8.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Medium 6.4
• CVE-2023-27922 Cross-site scripting in Newsletter Medium 6.1
• CVE-2025-3581 Newsletter < 8.8.5 - Admin+ Stored XSS via Widget Medium 4.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-mg6c-vwvq-75r2.