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
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://github.com/libxls/libxls/issues/155 |
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History
Fri, 05 Jun 2026 10:45:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Libxls
Libxls libxls |
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| Vendors & Products |
Libxls
Libxls libxls |
Thu, 04 Jun 2026 18:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Libxls Project
Libxls Project libxls |
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| CPEs | cpe:2.3:a:libxls_project:libxls:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Libxls Project
Libxls Project libxls |
Thu, 04 Jun 2026 15:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Uninitialized Memory Use in libxls OLE Parser Leading to Crash or Information Disclosure |
Thu, 04 Jun 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
cvssV3_1
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Wed, 03 Jun 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Uninitialized Memory Use in libxls OLE Parser Leading to Crash or Information Disclosure | |
| Weaknesses | CWE-457 |
Wed, 03 Jun 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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 | |
| References |
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Status: PUBLISHED
Assigner: mitre
Published: 2026-06-03T00:00:00.000Z
Updated: 2026-06-04T12:25:41.091Z
Reserved: 2026-02-16T00:00:00.000Z
Link: CVE-2026-26824
Updated: 2026-06-04T12:25:21.984Z
Status : Analyzed
Published: 2026-06-03T20:16:18.677
Modified: 2026-06-04T18:41:31.953
Link: CVE-2026-26824
No data.