How to fix CVE-2021-47901?

Within 24 hours: Immediately cease use of the --csv-report flag in Dirsearch 0.4.1 and switch to alternative reporting formats (JSON or standard output). Within 7 days: Audit all CSV reports generated in the past 90 days for evidence of exploitation and review system logs for suspicious activity on machines that opened these files. Within 30 days: Upgrade to Dirsearch 0.4.2 or later once patches are released, or migrate to an alternative directory enumeration tool with equivalent functionality.

CVE-2021-47901

CRITICAL

2026-01-27 [email protected]

9.8

CVSS 3.1

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Jan 29, 2026 - 16:31 vuln.today

Public exploit code

CVE Published

Jan 27, 2026 - 16:16 nvd

CRITICAL 9.8

Description

Dirsearch 0.4.1 contains a CSV injection vulnerability when using the --csv-report flag that allows attackers to inject formulas through redirected endpoints. Attackers can craft malicious server redirects with comma-separated paths containing Excel formulas to manipulate the generated CSV report.

Analysis

Dirsearch 0.4.1 has CSV injection in scan reports.

Technical Context

CWE-1236.

Affected Products

['Dirsearch 0.4.1']

Remediation

Update Dirsearch.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.1

CVSS: +49

POC: +20

CVE-2021-47901 vulnerability details – vuln.today

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CVE-2021-47901

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

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CVE-2021-47901

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

Share

External POC / Exploit Code