Integer Underflow (Wrap or Wraparound) Affecting lexbor 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-LEXBOR-15690915
- published19 Mar 2026
- disclosed13 Mar 2026
- creditNikita Sveshnikov
Introduced: 13 Mar 2026
NewCVE-2026-29078 (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 Underflow (Wrap or Wraparound) through the encoding loop that fails to reset the temporary size variable between iterations in the ISO-2022-JP encoder. An attacker can corrupt stack and heap memory by providing crafted DOM tree content that drives the stale size value used in the subtraction and thus causes memcpy to run with a negative length.