CVE-2021-23654

Name: CVE-2021-23654
Creator: NVD / NIST
Published: 2021-11-26T20:15:07.393+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.21%

Last modified Jun 17, 2026

CVE-2021-23654 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. This affects all versions of package html-to-csv. When there is a formula embedded in a HTML page, it gets accepted without any validation and the same would be pushed while converting it into a CSV file. EPSS estimates a 1.21% chance of exploitation in the next 30 days.

Description

This affects all versions of package html-to-csv. When there is a formula embedded in a HTML page, it gets accepted without any validation and the same would be pushed while converting it into a CSV file. Through this a malicious actor can embed or generate a malicious link or execute commands via CSV files.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.21%

64.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1236

Affected Software

Vendor	Product	Versions
Html-To-Csv Project	Html-To-Csv	<= 0.1.3

References

https://github.com/hanwentao/html2csv/blob/master/html2csv/converter.pyExploit, Third Party Advisory
https://snyk.io/vuln/SNYK-PYTHON-HTMLTOCSV-1582784Exploit, Third Party Advisory
https://github.com/hanwentao/html2csv/blob/master/html2csv/converter.pyExploit, Third Party Advisory
https://snyk.io/vuln/SNYK-PYTHON-HTMLTOCSV-1582784Exploit, Third Party Advisory

Timeline

Published: Nov 26, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23654?

How severe is CVE-2021-23654?

CVE-2021-23654 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.21% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23654?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-23654?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST