Off-by-one Error 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-15325652
- published22 Feb 2026
- disclosed19 Feb 2026
- creditOneafter
Introduced: 19 Feb 2026
CVE-2026-2703 (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 Off-by-one Error via the decode_base64 function in the Encrypted XLSX File Parser component. An attacker can cause a denial of service by executing a manipulation that triggers an off-by-one error.