CVE-2026-49383 XML external entity in IntelliJ IDEA
An attacker can exploit an XML External Entity vulnerability in the UI Designer form parser to read files or execute code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-49383?
CVE-2026-49383 is a low-severity vulnerability in Jetbrains Intellij Idea, published on 29 May 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In JetBrains IntelliJ IDEA before 2026.1 xXE in the UI Designer form parser was possible
Weakness: CWE-611
Which versions are affected by CVE-2026-49383?
It affects 1 product.
Products include Jetbrains Intellij Idea.
How do I fix CVE-2026-49383?
No fix has been published for CVE-2026-49383 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-49383 being exploited?
There is no known exploitation of CVE-2026-49383 in the wild and no public exploit code.
Other vulnerabilities in Jetbrains Intellij Idea
Sources
Also known as GHSA-hj3g-vw9v-9wj4.