Server-side request forgery in Eclipse Che leaks files and SCM tokens
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-522.
Summary
Eclipse Che from 7.29.0 before 7.123.0 passes attacker-controlled URLs from its SCM resolve and factory resolver endpoints to a fetcher with no scheme or host allow-list (CWE-918). Any authenticated user can read local files, reach internal HTTP services and cloud metadata endpoints, and have a stored SCM personal access token sent to a host of their choosing. The credential forwarding also occurs when a victim opens a workspace from a malicious devfile.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Eclipse Foundation | Eclipse Che | 7.29.0 to before 7.123.0 | 7.123.0 | Patch available | CNA |
- Eclipse Che VendorEclipse Foundation Affected 7.29.0 to before 7.123.0 Fixed in 7.123.0 Patch available CNA
Remediation
Upgrade Eclipse Che to 7.123.0, the fixed version listed for this flaw.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA Eclipse Che (Eclipse Foundation) Fixed in 7.123.0
Vendor assessments
Timeline
- 2026-10-05 Threatist record created from CVE-2026-86671
- 2026-10-05 Alias added: GHSA-c4vh-c3rq-3rgr
- 2026-10-05 CISA SSVC decision points changed
- 2026-10-05 Priority changed: MEDIUM → LOW
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score added · Red Hat
References
More Eclipse Foundation vulnerabilities
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2026-81947 Unauthenticated command injection in Eclipse Che che-machine-exec CVSS 3.1CRITICAL 9.8
- TI-2026-13216 CWE-863: ABAC authorization bypass via trailing slash route normalization in Eclipse BaSyx Go Components CVSS 3.1CRITICAL 9.8
- TI-2026-06514 Path traversal in Eclipse BaSyx CVSS 3.1CRITICAL 10.0
- TI-2026-01382 In the Eclipse Theia Website repository, the GitHub Actions workflow… CVSS 3.1CRITICAL 10.0
- TI-2026-74697 Authentication bypass in Eclipse Jetty EthereumAuthenticator CVSS 4.0CRITICAL 9.3
Sources
- CVE-2026-86671 · CVE Program
- CVE-2026-86671 · NVD
- FIRST EPSS
- GHSA-c4vh-c3rq-3rgr · GitHub Advisory Database · CC BY 4.0
- CVE-2026-86671 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences