VULNERABILITY INTELLIGENCE

CVE-2024-27094

CVSS score6.5 MEDIUM
EPSS probability0.76%
CISA KEVNot currently listed
Published2024-03-21
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

Description

OpenZeppelin Contracts is a library for secure smart contract development. The `Base64.encode` function encodes a `bytes` input by iterating over it in chunks of 3 bytes. When this input is not a multiple of 3, the last iteration may read parts of the memory that are beyond the input buffer. The vulnerability is fixed in 5.0.2 and 4.9.6.

Weakness classification

  • security-advisories@github.com: CWE-125

Primary references