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CVE-2021-23654

30
FAUCET Score

CVE-2021-23654 is a critical vulnerability affecting all versions of the html-to-csv package, allowing attackers to embed malicious formulas in HTML that are then executed when converted to a CSV file. With a CVSS score of 9.8, this vulnerability presents a severe risk, as it can lead to remote code execution or the generation of malicious links without user interaction. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.1.3CPE matchmatch criteria
cpe:2.3:a:html-to-csv_project:html-to-csv:*:*:*:*:*:python:*:*

CVSS Data

CVSS version used by this source: 3.1

5.6MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.2
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.21%
Probability of exploitation in next 30 days
EPSS Percentile
65.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0120 is in the 51st percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

pipGHSA-fwf6-rw69-hhj4medium

Improper Neutralization of Formula Elements in a CSV File in html-2-csv

Nov 30, 2021

References

github.com / hanwentao/html2csv/blob/master/html2csv/converter.py
ExploitThird Party Advisory
snyk.io / vuln/SNYK-PYTHON-HTMLTOCSV-1582784
ExploitThird Party Advisory