CVE-2021-47901
CWE-1236Published: January 27, 2026· Updated: Jun 17, 2026
Official 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.
Risk Analysis
Dirsearch is vulnerable to CSV injection, where malicious formulas can be injected into reports via redirected endpoints. This allows an attacker to manipulate the generated CSV files, resulting in a critical CVSS score of 9.8.
No public exploit is known, and the vulnerability is not in the KEV database.
Users should avoid opening CSV reports from untrusted sources and keep the software updated.
Technical Analysis
CVE-2021-47901 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Exploit & PoC Resources
All References (3)
Quick Facts
Related CVEs (CWE-1236)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-47901 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts