CVE-2026-114115 (GCVE-0-2026-114115)
Vulnerability from cvelistv5
Published
2026-10-21 00:37
Modified
2026-10-21 15:49
Severity ?
6.3 (Medium) - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
3.7 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Summary
Vyper 0.3.8 through 0.5.0b1 contains a compiler miscompilation vulnerability in parse_IfExp that reads nested arrays with narrower inner bounds using the wider result type's memory layout. When a ternary selects the narrower array, inner arrays after the first are read at wrong offsets, causing contracts to silently store corrupted values or revert.
References
Impacted products
Vendor Product Version
vyperlang vyper Version: 0.3.8
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