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.
References (7)
Core 7
Core References
Permissions Required, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.349552
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.349552
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.764644
Issue Tracking issue-tracking
https://github.com/xlnt-community/xlnt/issues/139
Third Party Advisory exploit
https://github.com/oneafter/0128/blob/main/xl3/repro
Issue Tracking issue-tracking
patch
https://github.com/xlnt-community/xlnt/pull/147
Various Sources product
https://github.com/xlnt-community/xlnt/
Scores
CVSS v3
3.3
EPSS
0.0017
EPSS Percentile
6.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-119
CWE-125
Status
published
Products (1)
xlnt-community/xlnt
< 1.6.1
Published
Mar 07, 2026
Tracked Since
Mar 07, 2026