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Ground Station: Unauthenticated arbitrary file write (path traversal) in save-waterfall-snapshot leads to remote code execution

Type: advisorySources: OSV

Ground Station is a browser-based suite for satellite tracking, SDR reception, hardware control, and telemetry decoding. Prior to version 0.4.13, the unauthenticated save-waterfall-snapshot Socket.IO command passes attacker-controlled snapshotName input from backend/handlers/entities/sdr.py to backend/server/snapshots.py, where os.path.join permits an absolute path or parent-directory traversal and writes attacker-controlled base64-decoded bytes outside backend/data/snapshots. An attacker can write a logging YAML file containing a logging.config.dictConfig callable factory, use the unauthenticated update-app-config operation to set log_config to that file, and invoke restart_service. During restart, backend/common/logger.py passes the YAML through resolve_log_config_path(), yaml.safe_load(), and logging.config.dictConfig(), which executes the factory with service privileges and can also cause a persistent crash loop. This issue is fixed in version 0.4.13.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-53451
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 16:58 UTC · Revision 1

Source evidence

Ground Station: Unauthenticated arbitrary file write (path traversal) in save-waterfall-snapshot leads to remote code execution

core-osv · Original source

Published 19 Aug 2026, 14:45 UTC

Ground Station is a browser-based suite for satellite tracking, SDR reception, hardware control, and telemetry decoding. Prior to version 0.4.13, the unauthenticated save-waterfall-snapshot Socket.IO command passes attacker-controlled snapshotName input from backend/handlers/entities/sdr.py to backend/server/snapshots.py, where os.path.join permits an absolute path or parent-directory traversal and writes attacker-controlled base64-decoded bytes outside backend/data/snapshots. An attacker can write a logging YAML file containing a logging.config.dictConfig callable factory, use the unauthenticated update-app-config operation to set log_config to that file, and invoke restart_service. During restart, backend/common/logger.py passes the YAML through resolve_log_config_path(), yaml.safe_load(), and logging.config.dictConfig(), which executes the factory with service privileges and can also cause a persistent crash loop. This issue is fixed in version 0.4.13.

osv:CVE-2026-53451
Complete source record
{
  "id": "980058f6e4e11d3dcbcbc1507a8e8e695b3d4ff271428ff5201a087b94201c3e",
  "url": "https://osv.dev/vulnerability/CVE-2026-53451",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Ground Station: Unauthenticated arbitrary file write (path traversal) in save-waterfall-snapshot leads to remote code execution",
    "summary": "Ground Station is a browser-based suite for satellite tracking, SDR reception, hardware control, and telemetry decoding. Prior to version 0.4.13, the unauthenticated save-waterfall-snapshot Socket.IO command passes attacker-controlled snapshotName input from backend/handlers/entities/sdr.py to backend/server/snapshots.py, where os.path.join permits an absolute path or parent-directory traversal and writes attacker-controlled base64-decoded bytes outside backend/data/snapshots. An attacker can write a logging YAML file containing a logging.config.dictConfig callable factory, use the unauthenticated update-app-config operation to set log_config to that file, and invoke restart_service. During restart, backend/common/logger.py passes the YAML through resolve_log_config_path(), yaml.safe_load(), and logging.config.dictConfig(), which executes the factory with service privileges and can also cause a persistent crash loop. This issue is fixed in version 0.4.13.",
    "evidence": "osv:CVE-2026-53451",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-53451",
      "aliases": [
        "CVE-2026-53451",
        "GHSA-q35x-w3h6-36w8"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/sgoudelis/ground-station",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "fc971642d461b237c1bf2695d88da3d48f03ff1c"
                },
                {
                  "fixed": "5649905f1021155933463a54a76030924adffb9d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
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                      {
                        "fixed": "0.4.13"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "5649905f1021155933463a54a76030924adffb9d"
                      }
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                    "source": "REFERENCES_COMMIT"
                  },
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                        "fixed": "fc971642d461b237c1bf2695d88da3d48f03ff1c"
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                    "source": "REFERENCES_TAG",
                    "original_tag": "v0.4.13"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53451.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.814544513Z",
      "provider": "osv",
      "references": [
        "https://github.com/sgoudelis/ground-station/releases/tag/v0.4.13",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53451.json",
        "https://github.com/sgoudelis/ground-station/security/advisories/GHSA-q35x-w3h6-36w8",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-53451",
        "https://github.com/sgoudelis/ground-station/commit/5649905f1021155933463a54a76030924adffb9d"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-22",
          "CWE-73",
          "CWE-94"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53451.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-53451",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497636,
  "published_at": "2026-08-19T14:45:23.951+00:00"
}