CVE-2021-21371

Execution of untrusted code through config file

HIGH
8.6
CVSS Score
Published: March 10, 2021 at 09:50 PM UTC
Updated: June 17, 2026 at 03:35 AM UTC
1 product affected across 1 vendorJira Cloud

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Severity
HIGH8.6
Exploit prediction
EPSS 0.5%

Description

Tenable for Jira Cloud is an open source project designed to pull Tenable.io vulnerability data, then generate Jira Tasks and sub-tasks based on the vulnerabilities' current state. It published in pypi as "tenable-jira-cloud". In tenable-jira-cloud before version 1.1.21, it is possible to run arbitrary commands through the yaml.load() method. This could allow an attacker with local access to the host to run arbitrary code by running the application with a specially crafted YAML configuration file. This is fixed in version 1.1.21 by using yaml.safe_load() instead of yaml.load().

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.1.21
Affected range stops below 1.1.21, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-502

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