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OpenObserve has a SSRF Protection Bypass via IPv6 Bracket Notation in validate_enrichment_url

Type: advisorySources: OSV

OpenObserve is a cloud-native observability platform. In 0.70.3 and earlier, the validate_enrichment_url function in src/handler/http/request/enrichment_table/mod.rs fails to block IPv6 addresses because Rust's url crate returns them with surrounding brackets (e.g. "[::1]" not "::1"). An authenticated attacker can reach internal services blocked from external access. On cloud deployments this enables retrieval of IAM credentials via AWS IMDSv1 (169.254.169.254), GCP metadata, or Azure IMDS. On self-hosted deployments it allows probing internal network services.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-39361
Confirmed fixed CVEs
Not specified
Updated in this feed
2 Nov 2026, 19:13 UTC · Revision 1

Source evidence

OpenObserve has a SSRF Protection Bypass via IPv6 Bracket Notation in validate_enrichment_url

core-osv · Original source

Published 7 Apr 2026, 19:02 UTC

OpenObserve is a cloud-native observability platform. In 0.70.3 and earlier, the validate_enrichment_url function in src/handler/http/request/enrichment_table/mod.rs fails to block IPv6 addresses because Rust's url crate returns them with surrounding brackets (e.g. "[::1]" not "::1"). An authenticated attacker can reach internal services blocked from external access. On cloud deployments this enables retrieval of IAM credentials via AWS IMDSv1 (169.254.169.254), GCP metadata, or Azure IMDS. On self-hosted deployments it allows probing internal network services.

osv:CVE-2026-39361
Complete source record
{
  "id": "e0f0e914b4e146c6b8ff39a6d386f3fdb4969378a945180d009dbab84c2038d9",
  "url": "https://osv.dev/vulnerability/CVE-2026-39361",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "OpenObserve has a SSRF Protection Bypass via IPv6 Bracket Notation in validate_enrichment_url",
    "summary": "OpenObserve is a cloud-native observability platform. In 0.70.3 and earlier, the validate_enrichment_url function in src/handler/http/request/enrichment_table/mod.rs fails to block IPv6 addresses because Rust's url crate returns them with surrounding brackets (e.g. \"[::1]\" not \"::1\"). An authenticated attacker can reach internal services blocked from external access. On cloud deployments this enables retrieval of IAM credentials via AWS IMDSv1 (169.254.169.254), GCP metadata, or Azure IMDS. On self-hosted deployments it allows probing internal network services.",
    "evidence": "osv:CVE-2026-39361",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-39361",
      "aliases": [
        "CVE-2026-39361",
        "GHSA-gcwf-3p7h-wm79"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/openobserve/openobserve",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "d1a5d8f65b432e2e82f83231390dec7f107e8d75"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:openobserve:openobserve:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.70.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d1a5d8f65b432e2e82f83231390dec7f107e8d75"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
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            "v0.70.0-rc1",
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39361.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.996608817Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39361.json",
        "https://github.com/openobserve/openobserve/security/advisories/GHSA-gcwf-3p7h-wm79",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-39361",
        "https://github.com/openobserve/openobserve/commit/d1a5d8f65b432e2e82f83231390dec7f107e8d75"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-918"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39361.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-39361",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489021,
  "published_at": "2026-04-07T19:02:12.816+00:00"
}