CVE-2021-23654: This affects all versions of package html-to-csv

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MEDIUM 5.6REMOTEUPGRADE

CVE-2021-23654 is a medium-severity flaw (CVSS 5.6) affecting html-to-csv. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.6 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-1236
Published	2021-11-26
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: html-to-csv project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-11-26 20:15 UTCPublished CVE record published
2026-06-17 03:38 UTCUpdated Record last modified

html-to-csv project html-to-csv UPGRADE

Affected: <= 0.1.3

Fixed in: newer than 0.1.3

Safe to downgrade to: no unaffected older release

1. Check installed version

pip show html-to-csv

2. UPGRADE to newer than 0.1.3

pip install --upgrade "html-to-csv>0.1.3"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-23654?

html-to-csv: upgrade to newer than 0.1.3. Exact commands for each OS are on this page.

Is CVE-2021-23654 being exploited?

CVE-2021-23654 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-23654 affect?

CVE-2021-23654 affects html-to-csv. Severity is medium (CVSS 5.6). 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

How urgent is CVE-2021-23654?

Priority 47/100. Public exploit reference; Remotely exploitable, no login, no user action

References

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