CVE-2026-48212 Stored XSS in external pages
An OTRS administrator can inject JavaScript into Custom Pages, leading to stored XSS execution in user browsers.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-48212?
CVE-2026-48212 is a medium-severity cross-site scripting vulnerability in OTRS, published on 12 Oct 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
An OTRS administrator can enter arbitrary JavaScript into the content of an OTRS Custom Page, which is stored by the application and subsequently executed in the browser of users accessing that page.
This issue affects OTRS:
* 7.0.X * 8.0.X * 2023.X * 2024.X * 2025.X * 2026.X before 2026.7.X
Weakness: CWE-79
Which versions are affected by CVE-2026-48212?
How do I fix CVE-2026-48212?
No fix has been published for CVE-2026-48212 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-2026-48212 being exploited?
There is no known exploitation of CVE-2026-48212 in the wild and no public exploit code.
Sources
Also known as GHSA-x238-8qx9-7hh7, UBUNTU-CVE-2026-48212.