What is the CVSS score of CVE-2021-47901?

CVE-2021-47901 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Is there a public PoC exploit available for CVE-2021-47901?

Yes, a public proof-of-concept exploit is available for CVE-2021-47901. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate 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

Improper Neutralization of Formula Elements in a CSV File (CWE-1236)

2026-01-27 disclosure@vulncheck.com

Code Injection

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

DescriptionCVE.org

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.

AnalysisAI

Dirsearch 0.4.1 has CSV injection in scan reports.

Technical ContextAI

CWE-1236.

Affected ProductsAI

Dirsearch 0.4.1

RemediationAI

Update Dirsearch.

CVE-2021-47901 vulnerability details – vuln.today

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CVE-2021-47901

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

Affected ProductsAI

RemediationAI

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External POC / Exploit Code