VULNERABILITY INTELLIGENCE

CVE-2021-32742

CVSS score7.5 HIGH

EPSS probability1.20%

CISA KEVNot currently listed

Published2021-07-09

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

Vapor is a web framework for Swift. In versions 4.47.1 and prior, bug in the `Data.init(base32Encoded:)` function opens up the potential for exposing server memory and/or crashing the server (Denial of Service) for applications where untrusted data can end up in said function. Vapor does not currently use this function itself so this only impact applications that use the impacted function directly or through other dependencies. The vulnerability is patched in version 4.47.2. As a workaround, one may use an alternative to Vapor's built-in `Data.init(base32Encoded:)`.

Weakness classification

security-advisories@github.com: CWE-502
nvd@nist.gov: CWE-502

Primary references

security-advisories@github.com — Release Notes, Third Party Advisory
security-advisories@github.com — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory