CVE-2026-86671 Server-side request forgery in Eclipse Che
Authenticated users can exploit Server-Side Request Forgery to read local files, access internal services, and exfiltrate SCM tokens via malicious URLs.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86671?
CVE-2026-86671 is a high-severity server-side request forgery vulnerability in Eclipse Che, published on 5 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In Eclipse Che versions 7.29.0 and later, the GET `/api/scm/resolve` and `POST /api/factory/resolver` endpoints pass an attacker-controlled URL to `URLFetcher.fetch()`, which calls `new URL(url).openConnection()` with no scheme or host allow-list and returns the response body to the caller. Any authenticated Che user can read arbitrary local files via the file:// scheme (including the pod's Kubernetes service-account token at `file:///var/run/secrets/kubernetes.io/serviceaccount/token`), reach internal HTTP services and cloud instance metadata endpoints (169.254.169.254), and have their stored SCM personal access token attached as an `Authorization` header to a host of their choosing. The same credential-forwarding behavior also fires when a victim opens a workspace from a malicious devfile whose `parent.uri` points to an attacker-controlled server, enabling exfiltration of the victim's SCM PAT without direct API access. No fix is available.
Which versions are affected by CVE-2026-86671?
How do I fix CVE-2026-86671?
No fix has been published for CVE-2026-86671 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-2026-86671 being exploited?
There is no known exploitation of CVE-2026-86671 in the wild and no public exploit code.
Sources
Also known as GHSA-c4vh-c3rq-3rgr.