medium6.5
CVE-2026-26824
libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser.
Impact
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
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Libxls Project | Libxls | through 1.6.3 |