CVE-2023-53911 Textpattern CMS 4.8.8 Authenticated Stored Cross-Site Scripting via Article Excerpt

Medium 5.1 Published 17 Dec 2025 Updated 28 Jul 2026

Authenticated attackers can inject malicious scripts into article excerpts, leading to code execution or account takeover when viewed by other users.

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-2023-53911?

CVE-2023-53911 is a medium-severity cross-site scripting vulnerability in Tmrswrr Textpattern CMS, published on 17 Dec 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Textpattern CMS 4.8.8 contains a stored cross-site scripting vulnerability in the article excerpt field that allows authenticated users to inject malicious scripts. Attackers can insert JavaScript payloads into the excerpt, which will execute when the article is viewed by other users.

Weakness: CWE-79

Which versions are affected by CVE-2023-53911?

It affects 1 product.

Products include Textpattern Textpattern.

How do I fix CVE-2023-53911?

No fix has been published for CVE-2023-53911 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-2023-53911 being exploited?

There is no known exploitation of CVE-2023-53911 in the wild and no public exploit code.

Sources

Also known as GHSA-xqcr-r97c-wq7p.