Cyber Resilience

CVE-2023-46400

Kwhotel 0.47

Published
23 January 2025
Modified
07 February 2025
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0037 29th percentile
Risk Priority 71 floored blend · peak EPSS

Summary

CVE-2023-46400 is a critical-severity Improper Neutralization of Formula Elements in a CSV File (CWE-1236) vulnerability in Kwhotel Kwhotel. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique User Execution (T1204); ranked at the 29th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SI-15 (Information Output Filtering) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

KWHotel version 0.47 is affected by CVE-2023-46400, a CSV Formula Injection vulnerability present in the add guest function. This flaw, associated with CWE-1236, carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), marking it as critical due to its potential for severe impact across confidentiality, integrity, and availability.

The vulnerability can be exploited by any unauthenticated attacker with network access, requiring low complexity and no user interaction. Exploitation involves injecting malicious formulas into CSV output generated by the add guest function, potentially leading to arbitrary code execution when the file is processed by spreadsheet applications.

Advisories and further technical details are available in the referenced GitHub gist at https://gist.github.com/6en6ar/5d39374d6ced8acbe489e0b1b932d056. Security practitioners should consult this source for exploitation proofs, patch information, or workarounds specific to KWHotel deployments.

EU & UK References

Vulnerability Data

KWHotel 0.47 is vulnerable to CSV Formula Injection in the add guest function.

CWE(s)
CWE-1236

Related Threats

MITRE ATT&CK Enterprise Techniques

T1204 User Execution Execution
An adversary may rely upon specific actions by a user in order to gain execution.
attack.mitre.org →
T1204.002 Malicious File Execution
An adversary may rely upon a user opening a malicious file in order to gain execution.
attack.mitre.org →
T1566 Phishing Initial Access
Adversaries may send phishing messages to gain access to victim systems.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-46401Same product: Kwhotel Kwhotel
CVE-2024-45084Shared CWE-1236
CVE-2024-47485Shared CWE-1236
CVE-2025-54752Shared CWE-1236
CVE-2026-23873Shared CWE-1236
CVE-2023-29918Shared CWE-1236
CVE-2023-23796Shared CWE-1236
CVE-2025-1421Shared CWE-1236
CVE-2025-66834Shared CWE-1236
CVE-2026-41073Shared CWE-1236

Affected Assets

kwhotel
kwhotel
0.47

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.2.10

Mitigating Controls (NIST 800-53 r5) AI

SI-15 Information Output Filtering good match

Output filtering/validation directly stops unneutralized formula elements from being written into CSV files.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require output neutralization for untrusted CSV content to block formula injection.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect formula injection but does not itself implement the mitigation.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates input validation and output encoding that directly prevents formula injection in CSV exports.

A.8.26 Application security requirements partial match
prevents

Application security requirements include rules for safe CSV generation and handling of untrusted data.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles encourage safe data export design but do not specifically address CSV formula neutralization.

A.8.28 Secure coding partial match
prevents

Secure coding standards explicitly require neutralization of special characters when writing CSV files.

References