CVE-2026-2703
3.3 · LOWOverview
CVE-2026-2703 is a low-severity vulnerability affecting xlnt-community xlnt. It was published on February 19, 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::decode_base64 of the file source/detail/cryptography/base64.cpp of the component Encrypted XLSX File Parser. Executing a manipulation can lead to off-by-one. The attack requires local access. The exploit has been made available to the public and could be used for attacks. This patch is called f2d7bf494e5c52706843cf7eb9892821bffb0734. Applying a patch is advised to resolve 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-2026-2703?
CVE-2026-2703 is a low-severity vulnerability affecting xlnt-community xlnt. It was published on February 19, 2026 and has a CVSS 3.1 base score of 3.3 (LOW).
How severe is CVE-2026-2703?
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-2026-2703?
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-2026-2703?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-2703 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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