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OpenTelemetry-Go's Schema ParseFile leaks file descriptors on each parse

Type: advisorySources: OSV

OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.0.17, `go.opentelemetry.io/otel/schema/v1.0` and `go.opentelemetry.io/otel/schema/v1.1` leaks one file descriptor on each successful `ParseFile` call. `ParseFile` opens the schema file and passes it to `Parse` without closing it; repeated parsing in a long-running process can exhaust the process file descriptor limit and cause denial of service. Exploitation depends on a consuming application exposing repeated schema parsing to an attacker-controlled path. Version 0.0.17 contains a patch for the issue.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-45287
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 03:09 UTC · Revision 1

Source evidence

OpenTelemetry-Go's Schema ParseFile leaks file descriptors on each parse

core-osv · Original source

Published 4 Jun 2026, 14:45 UTC

OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.0.17, `go.opentelemetry.io/otel/schema/v1.0` and `go.opentelemetry.io/otel/schema/v1.1` leaks one file descriptor on each successful `ParseFile` call. `ParseFile` opens the schema file and passes it to `Parse` without closing it; repeated parsing in a long-running process can exhaust the process file descriptor limit and cause denial of service. Exploitation depends on a consuming application exposing repeated schema parsing to an attacker-controlled path. Version 0.0.17 contains a patch for the issue.

osv:CVE-2026-45287
Complete source record
{
  "id": "5a3f9f6e69f9e689d5fde9541848dcfb5ba57ba0ee4261d9a185e25c97cd2935",
  "url": "https://osv.dev/vulnerability/CVE-2026-45287",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "OpenTelemetry-Go's Schema ParseFile leaks file descriptors on each parse",
    "summary": "OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.0.17, `go.opentelemetry.io/otel/schema/v1.0` and `go.opentelemetry.io/otel/schema/v1.1` leaks one file descriptor on each successful `ParseFile` call. `ParseFile` opens the schema file and passes it to `Parse` without closing it; repeated parsing in a long-running process can exhaust the process file descriptor limit and cause denial of service. Exploitation depends on a consuming application exposing repeated schema parsing to an attacker-controlled path. Version 0.0.17 contains a patch for the issue.",
    "evidence": "osv:CVE-2026-45287",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-45287",
      "aliases": [
        "CVE-2026-45287",
        "GHSA-995v-fvrw-c78m",
        "GO-2026-5281"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/open-telemetry/opentelemetry-go",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "b62d92831b2dd142f5a0cc89c828270274196877"
                },
                {
                  "fixed": "e72a235518cb773137efd80336a179028bc34684"
                },
                {
                  "fixed": "f12d198f161b61735d65705248715aa97021ba8d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:opentelemetry:telemetry_schema_files:*:*:*:*:*:go:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.0.17"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "e72a235518cb773137efd80336a179028bc34684"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "f12d198f161b61735d65705248715aa97021ba8d"
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                    "source": "REFERENCES_COMMIT"
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45287.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.798746581Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45287.json",
        "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-995v-fvrw-c78m",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-45287",
        "https://github.com/open-telemetry/opentelemetry-go/commit/e72a235518cb773137efd80336a179028bc34684",
        "https://github.com/open-telemetry/opentelemetry-go/commit/f12d198f161b61735d65705248715aa97021ba8d"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-772",
          "CWE-775"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45287.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-45287",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 499912,
  "published_at": "2026-06-04T14:45:54.522+00:00"
}