Vulnerability in Vyperlang Vyper
CVE-2023-42460
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.
EPSS: 0.006 (43.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Vyperlang Vyper — versions >= 0.3.4, < 0.3.10
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Patch, Third Party Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-42460?
- CVE-2023-42460 is a medium-severity vulnerability in Vyperlang Vyper, classified under Incorrect Calculation. CVSS score: 5.3/10. Published 2023-09-27.
- How severe is CVE-2023-42460?
- Medium severity. CVSS v3 base score is 5.3 out of 10.