CVE-2024-24337Public exploitNetwork attack vector

Client-side command execution via unneutralized CSV formulas

Published Feb 12, 2024 · Updated Sep 29, 2025

CSV injection in Koha 23.05.05 and earlier allows remote authenticated users to execute DDE commands through exported patron or budget data. The patron and budget components preserve formula-leading staff input in CSV cells without neutralizing it before export. Exploitation requires a victim to export and open the file in a spreadsheet with macro security disabled, enabling programs to launch on that endpoint.

CVSS severity8.8
High
EPSS probability0.81%
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 Koha 23.05.05 and earlier allows remote authenticated users to execute DDE commands through exported patron or budget data. The patron and budget components preserve formula-leading staff input in CSV cells without neutralizing it before export. Exploitation requires a victim to export and open the file in a spreadsheet with macro security disabled, enabling programs to launch on that endpoint.

The record

CVE
CVE-2024-24337
Published
Feb 12, 2024
Updated
Sep 29, 2025
Vendor
Koha Community
Product
Koha
Classifications
CWE-1236, T1204.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 29, 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?

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

  1. Affected versionversion=0 <=23.05.05

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Koha Community · Kohaversion=0 <=23.05.05

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.0NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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