{"id":"DEBIAN-CVE-2026-26824","details":"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","modified":"2026-09-24T09:00:08.508958568Z","published":"2026-06-03T20:16:18.677Z","upstream":["CVE-2026-26824"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-26824"}],"affected":[{"package":{"name":"r-cran-readxl","ecosystem":"Debian:12","purl":"pkg:deb/debian/r-cran-readxl?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.2-1","1.4.3-1","1.4.4-1","1.4.5-1","1.5.0-1","1.5.0.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-26824.json"}},{"package":{"name":"r-cran-readxl","ecosystem":"Debian:13","purl":"pkg:deb/debian/r-cran-readxl?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.5-1","1.5.0-1","1.5.0.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-26824.json"}},{"package":{"name":"r-cran-readxl","ecosystem":"Debian:14","purl":"pkg:deb/debian/r-cran-readxl?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.5-1","1.5.0-1","1.5.0.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-26824.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L"}]}