meshtastic — security advisory

{
  "id": "b5443ba443125e254a47539862c2c4aad0bdfdca7dc467d258dabdf2401afad3",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-44359",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-44359",
    "summary": "Meshtastic is an open source mesh networking solution. Prior to version 2.7.21.1370b23, the Meshtastic GitHub repository's main_matrix.yml workflow is triggered by pull_request_target and multiple jobs check out the attacker's fork code and execute it with access to repository secrets and elevated GITHUB_TOKEN permissions. No approval gate exists. Pull requests from external users with author_association: \"NONE\" triggered the CI workflow automatically. The workflow directly executes attacker-controlled files from the fork checkout. This issue could have resulted in supply chain compromise, self-hosted runner compromise, and/or repository takeover for the repo. This issue is separate from GHSA-6mwm-v2vv-pp96, which addressed a command injection via github.head_ref in the setup job of the same workflow. That fix correctly moved to environment variables. However, the more critical fork checkout vulnerability across the check, build, and build-debian-src jobs was not addressed. Version 2.7.21.1370b23 contains a patch for thie issue.",
    "evidence": "osv:UBUNTU-CVE-2026-44359",
    "products": [
      {
        "name": {
          "value": "meshtastic",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "2.7.7-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.7.8-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.7.9-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.7.9-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.7.10-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.7.10-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.7.11-1",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "UBUNTU-CVE-2026-44359",
      "aliases": [
        "UBUNTU-CVE-2026-44359"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "meshtastic",
            "purl": "pkg:deb/ubuntu/meshtastic?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "2.7.7-1",
            "2.7.8-1",
            "2.7.9-1",
            "2.7.9-2",
            "2.7.10-1",
            "2.7.10-2",
            "2.7.11-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44359.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "python3-meshtastic",
                "binary_version": "2.7.11-1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T12:58:19.434070559Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-44359"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-44359",
        "https://www.cve.org/CVERecord?id=CVE-2026-44359"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-44359",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 358544,
  "published_at": "2026-07-20T00:16:00+00:00"
}