Integer Overflow or Wraparound Affecting libarchive 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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Start learning- Snyk IDSNYK-CONAN-LIBARCHIVE-18305762
- published25 Jul 2026
- disclosed3 Jul 2026
- creditUnknown
Introduced: 3 Jul 2026
NewCVE-2026-16517 (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 in the archive_write_zip_header function when ZIP encryption is enabled and the entry file size is close to INT64_MAX. An attacker can cause undefined behavior, such as incorrect Zip64 extension decisions or a crash, by crafting a ZIP archive with encryption enabled and a file size near the maximum 64-bit integer value. This is only exploitable if ZIP encryption is enabled and the file size is close to INT64_MAX.