CVE-2020-9466Network attack vector

Spreadsheet formula execution via unneutralized account fields

Published Feb 28, 2020 · Updated Aug 4, 2024

CSV injection in Export Users to CSV 1.4.2 and earlier allows remote authenticated users to execute formulas through exported account data. The export path copies user-controlled account-detail fields into CSV cells without neutralizing formula-leading characters. Exploitation requires an administrator to export the user list and open it in a formula-evaluating spreadsheet, where the payload can redirect the administrator to an attacker-selected site.

CVSS severity6.1
Medium
EPSS probability1.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSV injection in Export Users to CSV 1.4.2 and earlier allows remote authenticated users to execute formulas through exported account data. The export path copies user-controlled account-detail fields into CSV cells without neutralizing formula-leading characters. Exploitation requires an administrator to export the user list and open it in a formula-evaluating spreadsheet, where the payload can redirect the administrator to an attacker-selected site.

The record

CVE
CVE-2020-9466
Published
Feb 28, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1236, T1204.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 28, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1236Improper Neutralization of Formula Elements in a CSV File
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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