CVE-2026-16273 Narrative Publisher <= 1.0.7 - Contributor+ Stored XSS via narrative_post_script Post Meta
Contributors can inject JavaScript via post meta fields, leading to code execution in the browsers of higher-privileged users viewing the post.
- 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-2026-16273?
CVE-2026-16273 is a medium-severity cross-site scripting vulnerability in Unknown Narrative Publisher, published on 2 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The Narrative Publisher WordPress plugin through 1.0.7 does not restrict write access to a REST-exposed post meta field or escape it when rendering, allowing users with contributor-level access and above to store JavaScript that executes in the browser of any higher-privileged user who views the affected post.
Weakness: CWE-79
Which versions are affected by CVE-2026-16273?
How do I fix CVE-2026-16273?
No fix has been published for CVE-2026-16273 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-2026-16273 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16273 exists.
Sources
Also known as GHSA-26m8-g7wc-p86g.