Security advisory

{
  "id": "5b2af92b100145a32696aeaaf1b2a85a9233e6916d0bd078d69e60b19141dabb",
  "url": "https://osv.dev/vulnerability/CVE-2026-86590",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-86590",
    "summary": "In Eclipse Che versions 7.79.0 through 7.121.0, the dashboard backend's POST /dashboard/api/data/resolver endpoint passes a caller-supplied URL directly to an outbound HTTP GET request with no host filtering. An authenticated user can exploit this server-side request forgery (SSRF) to read responses from internal network addresses, including the cloud instance metadata service (169.254.169.254), loopback interfaces, RFC-1918 private ranges, and in-cluster Kubernetes services. The operator-configured allowlist (spec.devEnvironments.allowedSources.urls) is not consulted. The vulnerability is fixed in version 7.122.0, which adds private-address blocking, IPv4-mapped IPv6 bypass prevention, operator allowlist enforcement, and disables HTTP redirects on the outbound request.",
    "evidence": "osv:CVE-2026-86590",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-86590",
      "aliases": [
        "CVE-2026-86590"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/eclipse-che/che-dashboard",
              "type": "GIT",
              "events": [
                {
                  "introduced": "db0b0859b3481fb34e178f4d789a7f11b07f19b9"
                },
                {
                  "fixed": "ab1beea71f8d1eb3b7b52b02d245624a2f53022b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "7.79.0"
                      },
                      {
                        "fixed": "7.122.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86590.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.775481038Z",
      "provider": "osv",
      "references": [
        "https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/617",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86590.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-86590",
        "https://github.com/eclipse-che/che-dashboard/pull/1655"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-918"
        ],
        "cna_assigner": "eclipse",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86590.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-86590",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 494363,
  "published_at": "2026-09-08T09:15:25.594+00:00"
}