Vulnerability 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 Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xlnt-Community | Xlnt | <= 1.6.1 |
Related Weaknesses (CWE)
References
- https://github.com/oneafter/0128/blob/main/xl2/reproExploit
- https://github.com/xlnt-community/xlnt/Product
- https://github.com/xlnt-community/xlnt/issues/138ExploitIssue TrackingVendor 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 RequiredVDB Entry
- https://vuldb.com/?id.348530Third Party AdvisoryVDB Entry
- https://vuldb.com/?submit.764643Third Party AdvisoryVDB Entry
FAQ
What is CVE-2026-3463?
CVE-2026-3463 is a vulnerability with a CVSS score of 3.3 (LOW). 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 ...
How severe is CVE-2026-3463?
CVE-2026-3463 has been rated LOW with a CVSS base score of 3.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-3463?
Check the references section above for vendor advisories and patch information. Affected products include: Xlnt-Community Xlnt.