CVE-2026-48209 Reflected XSS in authenticated agent context
Authenticated attackers can execute arbitrary JavaScript in agent sessions via crafted ticket URLs, potentially leading to session hijacking or data theft.
- 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-2026-48209?
CVE-2026-48209 is a high-severity cross-site scripting vulnerability in Otrs Otrs, published on 1 Jun 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
An improper neutralization of user-controllable input in OTRS or ((OTRS)) Community Edition ticket handling allows authenticated attackers to perform reflected cross-site scripting (XSS) attacks via crafted request parameters associated with ticket actions. By injecting malicious JavaScript into manipulated request URLs, attackers can execute arbitrary script code in the context of an authenticated agent session when the crafted link is opened.
This issue affects OTRS:
* 7.0.x
Please note that ((OTRS)) Community Edition 6.x and before are vulnerable. Products based on the ((OTRS)) Community Edition also very likely to be affected
Which versions are affected by CVE-2026-48209?
It affects 1 product.
Products include Otrs Otrs.
How do I fix CVE-2026-48209?
No fix has been published for CVE-2026-48209 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-2026-48209 being exploited?
There is no known exploitation of CVE-2026-48209 in the wild and no public exploit code.
Other vulnerabilities in Otrs Otrs
Sources
Also known as GHSA-hwvj-jp99-g693.