What is CVE-2022-21241?

CVE-2022-21241 is a critical-severity vulnerability in Csv\+ Project, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2022-02-08.

How severe is CVE-2022-21241?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Is CVE-2022-21241 known to be exploited?

13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Csv\+ Project

CVE-2022-21241

Cross-site scripting vulnerability in CSV+ prior to 0.8.1 allows a remote unauthenticated attacker to inject an arbitrary script or an arbitrary OS command via a specially crafted CSV file that contains HTML a tag.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-02-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.032 (87.6th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000

Affected products

Csv\+ Project
Plus One Csv+ — versions prior to 0.8.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

github.com/plusone-masaki/csv-plus/releases/tag/v0.8.1 (Third Party Advisory, Release Notes)
jvn.jp/en/jp/JVN67396225/index.html (Third Party Advisory)

Frequently asked questions

What is CVE-2022-21241?: CVE-2022-21241 is a critical-severity vulnerability in Csv\+ Project, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2022-02-08.
How severe is CVE-2022-21241?: Critical severity. CVSS v3 base score is 9.6 out of 10.
Is CVE-2022-21241 known to be exploited?: 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.