Bugsink affected by authenticated arbitrary file write in artifactbundle/assemble

{
  "id": "278a85574b4af37701598e0ccbd06bbb0931670c73c253ffbeb914cf2509b008",
  "url": "https://osv.dev/vulnerability/CVE-2026-40162",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Bugsink affected by authenticated arbitrary file write in artifactbundle/assemble",
    "summary": "Bugsink is a self-hosted error tracking tool. In 2.1.0, an authenticated file write vulnerability was identified in Bugsink 2.1.0 in the artifact bundle assembly flow. A user with a valid authentication token could cause the application to write attacker-controlled content to a filesystem location writable by the Bugsink process. This vulnerability is fixed in 2.1.1.",
    "evidence": "osv:CVE-2026-40162",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-40162",
      "aliases": [
        "CVE-2026-40162",
        "GHSA-8hw4-fhww-273g",
        "PYSEC-2026-2404"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/bugsink/bugsink",
              "type": "GIT",
              "events": [
                {
                  "introduced": "43c81f62328e2f782848dcc348a3862c6f0d1aad"
                },
                {
                  "fixed": "c5d04b12ceebdc22942439bddd92dc70e8cd6cd0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "2.1.0"
                      },
                      {
                        "fixed": "2.1.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "c5d04b12ceebdc22942439bddd92dc70e8cd6cd0"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "2.1.1"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40162.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:28.984230567Z",
      "provider": "osv",
      "references": [
        "https://github.com/bugsink/bugsink/releases/tag/2.1.1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40162.json",
        "https://github.com/bugsink/bugsink/security/advisories/GHSA-8hw4-fhww-273g",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-40162"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-20"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40162.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-40162",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 495685,
  "published_at": "2026-04-10T17:02:58.985+00:00"
}