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RAW NVD TELEMETRY
CVE-2026-79591
CVSS Base Score
7.8 HIGH
Primary Weakness
CWE-122
Published Date
Sep 10, 2026
Data Source
NVD API
A heap-buffer-overflow and use-after-free vulnerability exists in the xls_getCSS() function of libxls 1.6.3 due to insufficient validation of a file-controlled font index.