CVE-2026-26824

CVSS Score & Metrics

Base Score

6.5 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L                                    

Vulnerability Description

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

Vulnerability Details

Published Date

June 03, 2026

Last Modified

June 04, 2026

CWE ID

CWE-457

Source

NVD

Vendor

libxls_project

Product

libxls

External References

https://github.com/libxls/libxls/issues/155

CVSS Score & Metrics

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