CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NCVE-2022-24787
High (7.5) in vyperlang vyper. EPSS 1.0% chance of exploitation in the next 30 days. Fixed in vyper 0.3.2.
Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine. In version 0.3.1 and prior, bytestrings can have dirty bytes in them, resulting in the word-for-word comparisons giving incorrect results. Even without dirty nonzero bytes, two bytestrings can compare to equal if one ends with `"\x00"` because there is no comparison of the length. A patch is available and expected to be part of the 0.3.2 release. There are currently no known workarounds.
Severity
- EPSS
- 1.0% chance of exploitation in the next 30 days; higher than 63% of CVEs (scores of 2026-10-31)
- CWE
- CWE-697
- Published
- Modified
- Record from
- the NVD, synced
Affected
- vyperlang:vyper
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-7vrm-3jc8-5wwm | PyPI | vyper | <0.3.2 | 0.3.2 |
| PYSEC-2022-196 | PyPI | vyper | <0.3.2 | 0.3.2 |
References
- https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e508
- https://github.com/vyperlang/vyper/security/advisories/GHSA-7vrm-3jc8-5wwm
- https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e508
- https://github.com/vyperlang/vyper/security/advisories/GHSA-7vrm-3jc8-5wwm