CVE-2020-10460Public exploitNetwork attack vector

Spreadsheet command execution via unanchored email validation

Published Mar 12, 2020 · Updated Aug 4, 2024

CSV injection in Chadha PHPKB Standard Multi-Language 9 allows remote authenticated users to execute spreadsheet formulas through an export. The validateInput function uses an unanchored email regular expression, and exportAsCSV writes accepted values with fputcsv without neutralizing formula prefixes. Superuser access is required, and execution occurs only when the generated CSV is opened in formula-processing spreadsheet software.

CVSS severity4.9
Medium
EPSS probability1.08%
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 Chadha PHPKB Standard Multi-Language 9 allows remote authenticated users to execute spreadsheet formulas through an export. The validateInput function uses an unanchored email regular expression, and exportAsCSV writes accepted values with fputcsv without neutralizing formula prefixes. Superuser access is required, and execution occurs only when the generated CSV is opened in formula-processing spreadsheet software.

The record

CVE
CVE-2020-10460
Published
Mar 12, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1236, T1204.002
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 12, 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:P/A:N
4.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

Public exploit references

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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