cve.bz

CVE-2023-30837

7.5 highEPSS 0.7%

High (7.5) in vyperlang vyper. EPSS 0.7% chance of exploitation in the next 30 days. Fixed in vyper 0.3.8.

Vyper is a pythonic smart contract language for the EVM. The storage allocator does not guard against allocation overflows in versions prior to 0.3.8. An attacker can overwrite the owner variable. This issue was fixed in version 0.3.8.

Severity

CVSS 3.1

7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-31)
CWE
CWE-789
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-mgv8-gggw-mrg6PyPIvyper<0.3.80.3.8
PYSEC-2023-76PyPIvyper<0.3.80.3.8

References

Check your stackJSON