Integer Overflow or Wraparound Affecting expat package, versions [0,]
Threat Intelligence
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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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- published22 Jun 2026
- disclosed21 Jun 2026
- creditUnknown
Introduced: 21 Jun 2026
NewCVE-2026-56409 (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 Integer Overflow or Wraparound via the xmlwf process when the -d parameter is used to specify an output directory. An attacker can cause unintended behavior or potentially execute arbitrary code by providing a specially crafted output filename.