VulnerabilityAnalyzed
CVE-2026-3463
A weakness has been identified in xlnt-community xlnt up to 1.6.1.
LOW 1.9EPSS 0.19%
Does this matter?
Lower severity and a low EPSS score (0.19%). Track it; it rarely justifies an emergency change on its own.
Description
A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::binary_writer::append of the file source/detail/binary.hpp of the component Compound Document Parser. This manipulation causes heap-based buffer overflow. The attack can only be executed locally. The exploit has been made available to the public and could be used for attacks. Patch name: 147. It is suggested to install a patch to address this issue.
- CVSS 4.0
- 1.9 LOWCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.19% probability · 9th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119, CWE-122
- Affected
- xlnt-community/xlnt
- Source
- cna@vuldb.com
References
- https://github.com/oneafter/0128/blob/main/xl2/reproExploit
- https://github.com/xlnt-community/xlnt/Product
- https://github.com/xlnt-community/xlnt/issues/138Exploit, Issue Tracking, Vendor Advisory
- https://github.com/xlnt-community/xlnt/issues/138#issuecomment-3868381672Issue Tracking
- https://github.com/xlnt-community/xlnt/pull/147Issue Tracking
- https://vuldb.com/?ctiid.348530Permissions Required, VDB Entry
- https://vuldb.com/?id.348530Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.764643Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.