CVE-2026-114117Medium· 5.9▾ SunlitVyper 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…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 32.5 · likelihood 0 · exploitation 0
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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.
vyper >= 0.3.8 <= 0.5.0b1Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
GHSA-4v7v-gqf9-ww2gMediumVyper: Call stack corruption when passing complex type containing non-base type members as argument
CVE-2020-37288Low· 3.7Vyper 0.1.0b10 before 0.2.3 Invalid Jump Destination via Return in Nested Loops
CVE-2020-37286Medium· 6.5Vyper 0.1.0b4 before 0.3.0 Memory Corruption via Nested Internal Function Calls
CVE-2020-37289Low· 3.7Vyper before 0.3.1 Improper Input Validation of uint8 Interface Return Values
CVE-2020-37287Medium· 5.9Vyper before 0.2.6 Call Stack Corruption via Complex Type Function Arguments
CVE-2021-48018High· 7.4Vyper 0.2.13 before 0.2.15 Storage Corruption via @nonreentrant Decorator