CVE-2026-3463
3.3 · LOWOverview
CVE-2026-3463 is a low-severity vulnerability affecting xlnt-community xlnt. It was published on March 3, 2026 and has a CVSS 3.1 base score of 3.3 (LOW).
This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from xlnt-community. Update xlnt to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| xlnt-community | xlnt | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2026-3463?
CVE-2026-3463 is a low-severity vulnerability affecting xlnt-community xlnt. It was published on March 3, 2026 and has a CVSS 3.1 base score of 3.3 (LOW).
How severe is CVE-2026-3463?
This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-3463?
Check the references section for vendor advisories and patches from xlnt-community. Update xlnt to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-3463?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-3463 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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