CVE-2023-46400Public exploitNetwork attack vector

Spreadsheet formula execution via unsanitized guest comments

Published Jan 23, 2025 · Updated Jan 24, 2025

CSV injection in KWHotel Free edition 0.47 allows attackers to embed spreadsheet formulas in exported guest records. The add guest function accepts a formula-prefixed payload in the guest comment field without validation and writes it unchanged to CSV output. Exploitation requires the CSV to be exported and opened in formula-interpreting spreadsheet software, where the demonstrated payload invokes a command in the spreadsheet user's context.

CVSS severity9.8
Critical
EPSS probability0.37%
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 KWHotel Free edition 0.47 allows attackers to embed spreadsheet formulas in exported guest records. The add guest function accepts a formula-prefixed payload in the guest comment field without validation and writes it unchanged to CSV output. Exploitation requires the CSV to be exported and opened in formula-interpreting spreadsheet software, where the demonstrated payload invokes a command in the spreadsheet user's context.

The record

CVE
CVE-2023-46400
Published
Jan 23, 2025
Updated
Jan 24, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1236, T1204.002
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 24, 2025Record 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 privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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
PrivilegesUnavailable
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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