CVE-2021-4437

Description

A vulnerability, which was classified as problematic, has been found in dbartholomae lambda-middleware frameguard up to 1.0.4. Affected by this issue is some unknown functionality of the file packages/json-deserializer/src/JsonDeserializer.ts of the component JSON Mime-Type Handler. The manipulation leads to inefficient regular expression complexity. Upgrading to version 1.1.0 is able to address this issue. The patch is identified as f689404d830cbc1edd6a1018d3334ff5f44dc6a6. It is recommended to upgrade the affected component. VDB-253406 is the identifier assigned to this vulnerability.

How to fix CVE-2021-4437

To remediate CVE-2021-4437, upgrade the affected package to a fixed version below.

• —upgrade to 1.1.0 or later

Is CVE-2021-4437 being exploited?

Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, < 1.1.0

CVSS scores

References (8)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-4437
• PATCHgithub.com/dbartholomae/lambda-middleware
• WEBgithub.com/dbartholomae/lambda-middleware/commit/f689404d830cbc1edd6a1018d3334ff5f44dc6a6
• WEBgithub.com/dbartholomae/lambda-middleware/pull/57