CVE-2026-114117 | BDVDB-2026-394101 Detail

Description#

Vyper 0.3.8 through 0.5.0b1 contains an optimizer miscompilation in which (msg.value | K) or (len(msg.data) | K), where K is any nonzero integer literal, is compiled to the constant 1 when used as a ternary expression branch under -O gas (the default) or -O codesize. Affected contracts use the wrong value in storage writes, arithmetic, indexes, return values, or events without warning or revert, which can record deposits incorrectly and lock funds.

Impact#

Weaknesses#

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Exploit#

History#

1. Version 12026-10-21Record published in the CVE List.