Excelize ANCHORARRAY: mutually-referencing array formulas recurse unboundedly via re-entrant CalcCellValue, causing a fatal stack overflow

{
  "id": "958c99a078f088d6aca5be685c4969041854b133da0ba7f76c6a8ad35b039cd5",
  "url": "https://osv.dev/vulnerability/CVE-2026-107216",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Excelize ANCHORARRAY: mutually-referencing array formulas recurse unboundedly via re-entrant CalcCellValue, causing a fatal stack overflow",
    "summary": "Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.8.1 to 2.11.0, ANCHORARRAY recursively calls the exported CalcCellValue function, creating a fresh calculation context at each cycle and bypassing in-flight and iteration controls. ANCHORARRAY calls CalcCellValue instead of cellResolver, so each recursive hop receives a new calcContext and loses cycle state. When mutually referencing dynamic-array formulas are evaluated directly or through formula-evaluating APIs, each recursion hop resets the cycle budget and prevents completion-based caches from breaking the cycle, allowing an attacker to cause a fatal Go stack overflow and abort the process. No fixed version is available as of this review.",
    "evidence": "osv:CVE-2026-107216",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-107216",
      "aliases": [
        "CVE-2026-107216",
        "GHSA-wp2g-vpjj-g53r",
        "GO-2026-6688"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/qax-os/excelize",
              "type": "GIT",
              "events": [
                {
                  "introduced": "688808b2b4f7bb1f338991c810cd2ee6a7bb1451"
                },
                {
                  "fixed": "ea12859e43c64d498ecf839263c5f917391f3316"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:excelize:excelize:*:*:*:*:*:go:*:*",
                    "range": [
                      {
                        "introduced": "2.8.1"
                      },
                      {
                        "last_affected": "2.11.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "ea12859e43c64d498ecf839263c5f917391f3316"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.11.0",
            "v2.10.1",
            "v2.10.0",
            "v2.9.1",
            "v2.9.0",
            "v2.8.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107216.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.847032450Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107216.json",
        "https://github.com/qax-os/excelize/security/advisories/GHSA-wp2g-vpjj-g53r",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-107216",
        "https://github.com/qax-os/excelize/commit/ea12859e43c64d498ecf839263c5f917391f3316"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-674"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107216.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-107216",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491370,
  "published_at": "2026-10-07T17:51:31.98+00:00"
}