CVE-2026-26824

{"id": "CVE-2026-26824", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 3.9}]}, "published": "2026-06-03T20:16:18.677", "references": [{"url": "https://github.com/libxls/libxls/issues/155", "tags": ["Exploit", "Issue Tracking"], "source": "cve@mitre.org"}, {"url": "https://github.com/libxls/libxls/issues/155", "tags": ["Exploit", "Issue Tracking"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-457"}]}], "descriptions": [{"lang": "en", "value": "libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table (MSAT) in read_MSAT() is not fully initialized before being consumed by ole2_validate_sector_chain(), which may result in application crashes or potential information disclosure when processing a crafted XLS file"}], "lastModified": "2026-06-04T18:41:31.953", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:libxls_project:libxls:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A2543F8A-FE1F-419A-B43B-3B2F5CED97E2", "versionEndIncluding": "1.6.3"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}