{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"r-cran-readxl","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":[],"id":"tcs_01M5NVMKGCMJYAQ4YFZJ2YD2SP","modified_at":"2026-10-25T05:00:06.895535701Z","published_at":"2026-09-10T21:17:46.933Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-79591","https://security-tracker.debian.org/tracker/CVE-2026-79591"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-79591#Debian:13/r-cran-readxl","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-79591"}],"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."}