AUGUST 4, 2026
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Case File

CVE-2021-28667

HIGH · CVSS 7.5 EPSS 2.31%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-03-18 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. See the original NVD description below for full technical details.

CVE
CVE-2021-28667
Severity
HIGH
CVSS
7.5
EPSS
2.31%

Original NVD Description

StackStorm before 3.4.1, in some situations, has an infinite loop that consumes all available memory and disk space. This can occur if Python 3.x is used, the locale is not utf-8, and there is an attempt to log Unicode data (from an action or rule name).

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