CVE-2026-26825

{"id": "CVE-2026-26825", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-26825", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-08T16:41:53.848420Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "affected": [{"source": "cve@mitre.org", "affectedData": [{"vendor": "n/a", "product": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}]}], "published": "2026-06-03T20:16:18.797", "references": [{"url": "https://github.com/libxls/libxls/commit/9adf88f4e3b304e397f70ac189e70776edb6d5a3", "source": "cve@mitre.org"}, {"url": "https://github.com/libxls/libxls/issues/153", "source": "cve@mitre.org"}, {"url": "https://github.com/libxls/libxls/issues/156", "tags": ["Exploit", "Issue Tracking"], "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-908"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-908"}]}], "descriptions": [{"lang": "en", "value": "A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xls_parseWorkBook() and is triggered by uninitialized heap memory originating from the OLE layer (ole2_read). The flaw is detectable with MemorySanitizer (MSAN) and can lead to undefined behavior, incorrect parsing logic, or potential information disclosure."}, {"lang": "es", "value": "Una vulnerabilidad de uso de memoria no inicializada existe en libxls 1.6.3 al analizar archivos XLS malformados. El problema es alcanzable a trav\u00e9s de xls_parseWorkBook() y es provocado por memoria de pila no inicializada originada en la capa OLE (ole2_read). La falla es detectable con MemorySanitizer (MSAN) y puede conducir a comportamiento indefinido, l\u00f3gica de an\u00e1lisis incorrecta o potencial revelaci\u00f3n de informaci\u00f3n."}], "lastModified": "2026-09-23T16:16:42.607", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:libxls_project:libxls:1.6.3:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F160902E-5652-4EB6-8536-DAEA3A64A216"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}