HIGHCVSS 7.8

CVE-2026-79591

CVE-2026-79591 updated by NVD

Modified: 2026-09-17
Sources: nvd

Summary

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.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-79591

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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