CVE-2020-9372Public exploit

Code execution via exported booking formulas

Published Mar 4, 2020 · Updated Aug 4, 2024

CSV injection in CodePeople Appointment Booking Calendar before 1.3.35 allows remote attackers to execute code through exported booking data. The plugin accepts formula-prefixed values in booking Name and Description fields and writes them unchanged to CSV, causing spreadsheet software to evaluate them when an administrator opens the export. Exploitation requires an administrator to export and open attacker-supplied booking data in a formula-capable spreadsheet, where the formula runs with the administrator's desktop privileges.

CVSS severity7.8
High
EPSS probability8.61%
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 CodePeople Appointment Booking Calendar before 1.3.35 allows remote attackers to execute code through exported booking data. The plugin accepts formula-prefixed values in booking Name and Description fields and writes them unchanged to CSV, causing spreadsheet software to evaluate them when an administrator opens the export. Exploitation requires an administrator to export and open attacker-supplied booking data in a formula-capable spreadsheet, where the formula runs with the administrator's desktop privileges.

The record

CVE
CVE-2020-9372
Published
Mar 4, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1236, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 4, 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 vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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)
Vectorlocal
Privilegesunauthenticated
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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