CVE-2026-32986 Textpattern CMS 4.9.0: Second-Order XSS via Atom Feed Injection
Attackers can inject malicious scripts via Atom feed elements, leading to code execution when feeds are consumed by readers or aggregators.
- 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-2026-32986?
CVE-2026-32986 is a medium-severity cross-site scripting vulnerability in Textpattern CMS, published on 20 Mar 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
Textpattern CMS version 4.9.0 contains a second-order cross-site scripting vulnerability that allows attackers to inject malicious scripts by exploiting improper sanitization of user-supplied input in Atom feed XML elements. Attackers can embed unescaped payloads in parameters such as category that are reflected into Atom fields like and , which execute as JavaScript when feed readers or CMS aggregators consume the feed and insert content into the DOM using unsafe methods.
Which versions are affected by CVE-2026-32986?
It affects 1 product.
Products include Textpattern Textpattern.
How do I fix CVE-2026-32986?
No fix has been published for CVE-2026-32986 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-2026-32986 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32986 exists.
Other vulnerabilities in Textpattern CMS
Sources
Also known as GHSA-9j95-2mq7-rc9w.