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CVE-2026-3663

LOW

3.3

Description

A vulnerability was found in xlnt-community xlnt up to 1.6.1. This issue affects the function xlnt::detail::compound_document_istreambuf::xsgetn of the file source/detail/cryptography/compound_document.cpp of the component XLSX File Parser. Performing a manipulation results in out-of-bounds read. The attack is only possible with local access. The exploit has been made public and could be used. The patch is named 147. It is recommended to apply a patch to fix this issue.

CVE Details

CVSS v3.1 Score3.3

SeverityLOW

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

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published3/7/2026

Last Modified3/10/2026

Sourcenvd

Honeypot Sightings0

Affected Products

xlnt-community:xlnt

Weaknesses (CWE)

CWE-119CWE-125

References

https://github.com/oneafter/0128/blob/main/xl3/repro(cna@vuldb.com)

https://github.com/xlnt-community/xlnt/(cna@vuldb.com)

https://github.com/xlnt-community/xlnt/issues/139(cna@vuldb.com)

https://github.com/xlnt-community/xlnt/pull/147(cna@vuldb.com)

https://vuldb.com/?ctiid.349552(cna@vuldb.com)

https://vuldb.com/?id.349552(cna@vuldb.com)

https://vuldb.com/?submit.764644(cna@vuldb.com)

IOC Correlations

No correlations recorded

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