Use of Uninitialized Resource Affecting libxls package, versions [0,]
Threat Intelligence
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-LIBXLS-17308367
- published11 Jun 2026
- disclosed3 Jun 2026
- creditRichard Howe
Introduced: 3 Jun 2026
NewCVE-2026-26825 (opens in a new tab)How to fix?
There is no fixed version for libxls.
Overview
Affected versions of this package are vulnerable to Use of Uninitialized Resource in the xls_parseWorkBook function when handling malformed XLS files, due to uninitialized heap memory originating from the OLE layer (ole2_read). An attacker can cause undefined behavior, trigger incorrect parsing logic, or potentially access sensitive information by supplying specially crafted XLS files.