{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-103658", "assignerOrgId": "98a01053-8a31-4f6d-9aa9-252be161adc6", "state": "PUBLISHED", "assignerShortName": "Anthropic", "dateReserved": "2026-10-01T08:19:42.892Z", "datePublished": "2026-10-12T21:24:48.600Z", "dateUpdated": "2026-10-12T22:12:10.457Z"}, "containers": {"cna": {"descriptions": [{"lang": "en", "value": "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 \u2014 for example via aspell dump master <file> \u2014 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."}], "affected": [{"vendor": "GNU", "product": "Aspell", "packageURL": "pkg:github/GNUAspell/aspell", "versions": [{"version": "0.60.8.2", "status": "affected", "versionType": "semver"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-122", "description": "CWE-122 Heap-based Buffer Overflow"}]}], "references": [{"url": "https://github.com/GNUAspell/aspell/security/advisories/GHSA-p35p-2mw5-fj5j"}], "credits": [{"lang": "en", "type": "finder", "value": "Anthropic, Claude"}, {"lang": "en", "type": "analyst", "value": "Ada Logics"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "baseScore": 5.9, "baseSeverity": "MEDIUM"}}], "providerMetadata": {"orgId": "98a01053-8a31-4f6d-9aa9-252be161adc6", "shortName": "Anthropic", "dateUpdated": "2026-10-12T22:12:10.457Z"}}}}

{}

{"affected": [{"affectedData": [{"packageURL": "pkg:github/GNUAspell/aspell", "product": "Aspell", "vendor": "GNU", "versions": [{"status": "affected", "version": "0.60.8.2", "versionType": "semver"}]}], "source": "98a01053-8a31-4f6d-9aa9-252be161adc6"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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 \u2014 for example via aspell dump master <file> \u2014 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", "lastModified": "2026-10-12T23:17:19.700", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 3.4, "source": "98a01053-8a31-4f6d-9aa9-252be161adc6", "type": "Secondary"}]}, "published": "2026-10-12T22:17:03.143", "references": [{"source": "98a01053-8a31-4f6d-9aa9-252be161adc6", "url": "https://github.com/GNUAspell/aspell/security/advisories/GHSA-p35p-2mw5-fj5j"}], "sourceIdentifier": "98a01053-8a31-4f6d-9aa9-252be161adc6", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "98a01053-8a31-4f6d-9aa9-252be161adc6", "type": "Secondary"}]}

{"bugzilla": {"description": "aspell: aspell: Arbitrary code execution via crafted dictionary file", "id": "2550001", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2550001"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["A flaw was found in Aspell. An attacker could achieve arbitrary code execution or cause a Denial of Service (DoS) by convincing a user to process a specially crafted dictionary file. This issue occurs due to an integer calculation error during buffer capacity checks in the read-only dictionary loader, leading to a heap-based buffer overflow."], "name": "CVE-2026-103658", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "aspell", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Affected", "package_name": "aspell", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "aspell", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "aspell", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "aspell", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-10-12T21:24:48Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-103658\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-103658\nhttps://github.com/GNUAspell/aspell/security/advisories/GHSA-p35p-2mw5-fj5j"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0.60.8.2,0.60.8.3)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Aspell", "source": "cna", "vendor": "GNU"}, "product": "aspell", "vendor": "gnu"}], "created": "2026-10-12T22:30:07.750801+00:00", "updated": "2026-10-13T01:15:15.167033+00:00", "vendors": ["gnu", "gnu$PRODUCT$aspell"]}