What is CVE-2021-23654?

CVE-2021-23654 is a medium-severity vulnerability in Html-To-Csv Project, classified under Improper Neutralization of Formula Elements in a CSV File. CVSS score: 5.6/10. Published 2021-11-26.

How severe is CVE-2021-23654?

Medium severity. CVSS v3 base score is 5.6 out of 10.

Vulnerability in Html-To-Csv Project

CVE-2021-23654

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.

Published 2021-11-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.012 (68.1th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: +0.000

Affected products

Html-To-Csv Project
Html-To-Csv — versions 0

Weakness classification (CWE)

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

References

snyk.io/vuln/SNYK-PYTHON-HTMLTOCSV-1582784 (Exploit, Third Party Advisory)
github.com/hanwentao/html2csv/blob/master/html2csv/converter.py (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-23654?: CVE-2021-23654 is a medium-severity vulnerability in Html-To-Csv Project, classified under Improper Neutralization of Formula Elements in a CSV File. CVSS score: 5.6/10. Published 2021-11-26.
How severe is CVE-2021-23654?: Medium severity. CVSS v3 base score is 5.6 out of 10.