CVE-2026-85677 Gutenverse News < 3.3.3 - Unauthenticated Stored XSS via Comment Content
Unauthenticated attackers can inject JavaScript via comments, leading to code execution in admin browsers and potential account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-85677?
CVE-2026-85677 is a high-severity cross-site scripting vulnerability in Unknown Gutenverse News, published on 11 Sep 2026. 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 Gutenverse News WordPress plugin before 3.3.3 does not restrict the extra HTML it adds to WordPress's allowed elements to the context it is meant for, applying the same relaxed list to every sanitisation context including untrusted comments, allowing unauthenticated users to store JavaScript that will execute in the browser of any administrator who reviews the comment queue, and of any visitor to the post once the comment is approved.
Weakness: CWE-79
Which versions are affected by CVE-2026-85677?
How do I fix CVE-2026-85677?
No fix has been published for CVE-2026-85677 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-2026-85677 being exploited?
There is no known exploitation of CVE-2026-85677 in the wild and no public exploit code.
Sources
Also known as GHSA-wg2r-37mx-8x45.