CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NCVE-2023-42460
High (7.5) in vyperlang vyper. EPSS 0.7% chance of exploitation in the next 30 days. Fixed in vyper 0.3.10.
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.
Severity
- EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)
- CWE
- CWE-682
- Published
- Modified
- Record from
- the NVD, synced
Affected
- vyperlang:vyper
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-cx2q-hfxr-rj97 | PyPI | vyper | >=0.3.4 <0.3.10 | 0.3.10 |
| PYSEC-2023-191 | PyPI | vyper | >=0.3.4 <0.3.10 | 0.3.10 |