GHSA-fccw-crcx-53frMediumCVSS 3.7
Vyper 0.3.8 through 0.5.0b1 contains a compiler miscompilation vulnerability in parse_IfExp that...
🔗 CVE IDs covered (1)
📋 Description
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 (5)
- https://github.com/vyperlang/vyper/security/advisories/GHSA-cw3h-xwxq-8cx2
- https://nvd.nist.gov/vuln/detail/CVE-2026-114115
- https://github.com/vyperlang/vyper/commit/1fb7dfe2
- https://www.vulncheck.com/advisories/vyper-0.3.8-through-0.5-0b1-memory-misread-via-ternary-nested-array-selection
- https://github.com/advisories/GHSA-fccw-crcx-53fr