{"id":"CVE-2026-103658","revision":"7474dc4d341b4103bff8dabffda249a3","records":[{"revision":"7474dc4d341b4103bff8dabffda249a3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-103658","aliases":[],"title":"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…","description":"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 <file> — 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.","state":0,"publishedAt":"2026-10-12T21:24:48.6+00:00","modifiedAt":"2026-10-14T19:15:47.603+00:00","affected":[{"ecosystem":"Vendor product","name":"Aspell","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"GNU\",\n                    \"product\": \"Aspell\",\n                    \"packageURL\": \"pkg:github/GNUAspell/aspell\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0.60.8.2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","score":5.9,"severity":"MEDIUM"}],"references":["https://github.com/GNUAspell/aspell/security/advisories/GHSA-p35p-2mw5-fj5j"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-103658","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-103658","identifiers":["CVE-2026-103658"]},"retained":false,"historicalAffected":[]}],"coverage":[]}