CVE-2020-35933 Cross-site scripting in n/a
Authenticated attackers can inject JavaScript via AJAX requests in the WordPress Newsletter plugin, potentially leading to session hijacking or malicious actions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-35933?
CVE-2020-35933 is a medium-severity cross-site scripting vulnerability in n/a, published on 1 Jan 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
A Reflected Authenticated Cross-Site Scripting (XSS) vulnerability in the Newsletter plugin before 6.8.2 for WordPress allows remote attackers to trick a victim into submitting a tnpc_render AJAX request containing either JavaScript in an options parameter, or a base64-encoded JSON string containing JavaScript in the encoded_options parameter.
Weakness: CWE-79
Which versions are affected by CVE-2020-35933?
It affects 1 product.
Products include Thenewsletterplugin Newsletter.
How do I fix CVE-2020-35933?
No fix has been published for CVE-2020-35933 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-2020-35933 being exploited?
There is no known exploitation of CVE-2020-35933 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2024-5317 Newsletter <= 8.3.4 - Unauthenticated Stored Cross-Site Scripting via np1
- CVE-2023-4772 Newsletter <= 7.8.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
- CVE-2023-27922 Cross-site scripting in Newsletter
- CVE-2022-1756 Newsletter < 7.4.5 - Reflected Cross-Site Scripting
- CVE-2025-3581 Newsletter < 8.8.5 - Admin+ Stored XSS via Widget
Sources
Also known as GHSA-25x7-rqcx-mfwh.