CVE-2026-3665

LOW 3.3

xlnt-community xlnt XLSX File xlsx_consumer.cpp read_office_document null pointer dereference

CVSS Score

3.3

EPSS Score

0.0%

EPSS Percentile

0th

A vulnerability was identified in xlnt-community xlnt up to 1.6.1. The affected element is the function xlnt::detail::xlsx_consumer::read_office_document of the file source/detail/serialization/xlsx_consumer.cpp of the component XLSX File Parser. The manipulation leads to null pointer dereference. The attack must be carried out locally. The exploit is publicly available and might be used.

CWE	CWE-476 CWE-404
Vendor	xlnt-community
Product	xlnt
Published	Mar 7, 2026
Last Updated	Mar 11, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

xlnt-community / xlnt

1.6.0 1.6.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/?id.349554 vuldb.com: https://vuldb.com/?ctiid.349554 vuldb.com: https://vuldb.com/?submit.764647 github.com: https://github.com/xlnt-community/xlnt/issues/140 github.com: https://github.com/oneafter/0128/blob/main/xl4/repro github.com: https://github.com/xlnt-community/xlnt/

Credits

🔍 Oneafter (VulDB User)