CVE-2026-86503 Server-side request forgery in IntelliJ IDEA
Attackers can trigger Server-Side Request Forgery in IntelliJ IDEA by opening untrusted projects with malicious Kubernetes spec-source URLs.
- 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-2026-86503?
CVE-2026-86503 is a low-severity server-side request forgery vulnerability in JetBrains IntelliJ IDEA, published on 7 Sep 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 2026.2.2 opening an untrusted project could trigger SSRF via Kubernetes spec-source URL fetching
Weakness: CWE-918
Which versions are affected by CVE-2026-86503?
How do I fix CVE-2026-86503?
No fix has been published for CVE-2026-86503 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-86503 being exploited?
There is no known exploitation of CVE-2026-86503 in the wild and no public exploit code.
Sources
Also known as GHSA-qjpc-rj7r-4gjr.