CVE-2022-21241

Code execution via unsanitized HTML anchors

Published Feb 8, 2022 · Updated Aug 3, 2024

Cross-site scripting in Plus one CSV+ before 0.8.1 allows remote attackers to execute scripts or OS commands through a crafted CSV file. The application renders an HTML anchor from the loaded CSV as a clickable link without sanitizing the embedded HTML. Execution requires the user to open the malicious file and click the injected link, after which attacker-supplied code runs in the desktop application context.

CVSS severity7.8
High
EPSS probability3.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Plus one CSV+ before 0.8.1 allows remote attackers to execute scripts or OS commands through a crafted CSV file. The application renders an HTML anchor from the loaded CSV as a clickable link without sanitizing the embedded HTML. Execution requires the user to open the malicious file and click the injected link, after which attacker-supplied code runs in the desktop application context.

The record

CVE
CVE-2022-21241
Published
Feb 8, 2022
Updated
Aug 3, 2024
Vendor
Plus one
Product
CSV+
Classifications
CWE-79, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 8, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=prior to 0.8.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Plus one · CSV+version=prior to 0.8.1

Published CVSS scores

6.8JPCERT/CCAV:N/AC:M/Au:N/C:P/I:P/A:P
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
9.6NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
7.8JPCERT/CCCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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