Description
Vyper is a Pythonic Smart Contract Language for the EVM. The `_abi_decode()` function does not validate input when it is nested in an expression. Uses of `_abi_decode()` can be constructed which allow for bounds checking to be bypassed resulting in incorrect results. This issue has not yet been fixed, but a fix is expected in release `0.3.10`. Users are advised to reference pull request #3626.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| vyperlang | vyper | >= 0.3.4, < 0.3.10 |
References
- https://github.com/vyperlang/vyper/pull/3626Patch
- https://github.com/vyperlang/vyper/security/advisories/GHSA-cx2q-hfxr-rj97Exploit, Patch, Third Party Advisory
- https://github.com/vyperlang/vyper/pull/3626Patch
- https://github.com/vyperlang/vyper/security/advisories/GHSA-cx2q-hfxr-rj97Exploit, Patch, Third Party Advisory
Timeline
- Published
- Sep 27, 2023
- Last modified
- Jun 17, 2026
- NVD status
- Modified