CVE-2026-26824_CVE-2026-26824

6.5 / 10

MEDIUM

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

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

Basic Information

ID CVE-2026-26824

Source mitre

Published Jun 3, 2026 at 00:00

Modified Jun 4, 2026 at 12:25

Affected Product

Vendor n/a

Product n/a

Version n/a

Affected Versions n/a n/a n/a

CWE Classification

CWE-457

References

github.com /libxls/libxls/issues/155

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    "published": "2026-06-03T00:00:00.000Z",
    "modified": "2026-06-04T12:25:41.091Z",
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