{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.60.8.2"
              },
              {
                "last_affected": "0.60.8.2"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "3de79d40aee4e9ccdc0d83856637949801a3d33b"
            },
            {
              "last_affected": "3de79d40aee4e9ccdc0d83856637949801a3d33b"
            }
          ],
          "repo": "https://github.com/gnuaspell/aspell",
          "type": "GIT"
        }
      ],
      "versions": [
        "0.60.8.2"
      ]
    }
  ],
  "aliases": [
    "GHSA-p35p-2mw5-fj5j"
  ],
  "database_specific": {
    "cna_assigner": "Anthropic",
    "cwe_ids": [
      "CWE-122"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103658.json"
  },
  "details": "GNU Aspell 0.60.8.2 (first vulnerable version is not known) contains a heap-based buffer overflow write (CWE-122) in its read-only dictionary loader. String::reserve() in common/string.hpp computes its capacity check with a signed int ((int)s + 1), so a requested size of 0x7FFFFFFF wraps negative and the backing buffer is never grown. ReadOnlyDict::load() in modules/speller/default/readonly_ws.cpp passes the unvalidated 32-bit size fields from a .rws dictionary header into this path, so a crafted .rws file with a valid endian marker (12345678) and an oversized length field (e.g. lang_name_size = 0x7FFFFFFF) causes attacker-controlled data to be written out of bounds past an undersized heap allocation. An attacker who induces a victim to load a malicious dictionary — for example via aspell dump master \u003cfile\u003e — can corrupt heap memory, resulting in denial of service and potentially code execution. Fixed in b830b6e and will be fixed in release 0.60.8.3.",
  "id": "CVE-2026-103658",
  "modified": "2026-10-16T02:30:36.496885862Z",
  "published": "2026-10-12T21:24:48.600Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103658.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/GNUAspell/aspell/security/advisories/GHSA-p35p-2mw5-fj5j"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-103658"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}