CVE-2021-4437 - CVE House
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Status published Low CVE-2021-4437

dbartholomae lambda-middleware frameguard JSON Mime-Type JsonDeserializer.ts redos

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • VulDB GitHub Commit Analyzer

Affected Vendor

dbartholomae

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Affected Software

lambda-middleware frameguard
Vulnerable Versions:
1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4

Timeline

Official Publish: February 12th, 2024
Last Modified: May 6th, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Weaknesses (CWE)