CVE-2026-27742 Bludit <= 3.16.2 Stored XSS in Post Content
Authenticated users can inject JavaScript into post content, leading to session hijacking and content manipulation for 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-2026-27742?
CVE-2026-27742 is a medium-severity cross-site scripting vulnerability in Bludit, published on 23 Feb 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
Bludit version 3.16.2 contains a stored cross-site scripting (XSS) vulnerability in the post content functionality. The application performs client-side sanitation of content input but does not enforce equivalent sanitation on the server side. An authenticated user can inject arbitrary JavaScript into the content field of a post, which is stored and later rendered to other users without proper output encoding. When viewed, the injected script executes in the context of the victim’s browser, allowing session hijacking, credential theft, content manipulation, or other actions within the user’s privileges.
Weakness: CWE-79
Which versions are affected by CVE-2026-27742?
It affects 1 product.
Products include Bludit Bludit.
How do I fix CVE-2026-27742?
No fix has been published for CVE-2026-27742 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-2026-27742 being exploited?
There is no known exploitation of CVE-2026-27742 in the wild and no public exploit code.
Other vulnerabilities in Bludit
Sources
Also known as GHSA-wg93-hp69-vv5w.