Out-of-bounds Read Affecting xlnt package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CONAN-XLNT-15440592
- published8 Mar 2026
- disclosed7 Mar 2026
- creditOneafter
Introduced: 7 Mar 2026
CVE-2026-3663 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Read in the xsgetn function of the XLSX file parser process. An attacker can cause a denial of service by providing specially crafted input that triggers an out-of-bounds read during file parsing.