CVE-2021-21809

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Published Jun 23, 2021 CVSS 3.1 · 9.1 Critical EPSS 24.2% KEV · Not listed

Description

A command execution vulnerability exists in the default legacy spellchecker plugin in Moodle 3.10. A specially crafted series of HTTP requests can lead to command execution. An attacker must have administrator privileges to exploit this vulnerabilities.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

Moodle

affected

Version	Status	Constraints
`Moodle 3.10`	affected	—

Configuration 1 [-]

cpe:2.3:a:moodle:moodle:3.10.0:-:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
Github GHSA	GHSA-c7jj-vfmr-j9mj	Moodle command execution vulnerability exists in the default legacy spellchecker plugin

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Changed

Confidentiality Impact High

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

Exploit prediction score: 24.2% (24.173% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
http://packetstormsecurity.com/files/164481/Moodle-SpellChecker-Path-Authenticated-Remote-Command-Execution.html
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1277

History

No history.

Subscriptions

Moodle Moodle

Weaknesses

CWE-78

Sources

CVE record Updated: Aug 3, 2024, 6:23 PM

Status: PUBLISHED
Assigner: talos
Published: Jun 23, 2021, 9:25 PM
Updated: Aug 3, 2024, 6:23 PM
Reserved: Jan 4, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:36 AM

Status: Modified
Published: Jun 23, 2021, 10:15 PM
Modified: Jun 17, 2026, 3:36 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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