CVE-2023-48207Public exploitNetwork attack vector

Spreadsheet formula execution via unescaped unique ID

Published Dec 7, 2023 · Updated Aug 2, 2024

CSV injection in PHPJabbers Availability Booking Calendar 5.0 allows remote authenticated users to execute formulas through reservation exports. The Reservations list writes the unique ID field to CSV output without neutralizing leading spreadsheet formula characters. Exploitation requires control of that field and a recipient who opens the generated CSV in software that evaluates formulas, enabling spreadsheet-side data access or command execution.

CVSS severity8.8
High
EPSS probability1.17%
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 PHPJabbers Availability Booking Calendar 5.0 allows remote authenticated users to execute formulas through reservation exports. The Reservations list writes the unique ID field to CSV output without neutralizing leading spreadsheet formula characters. Exploitation requires control of that field and a recipient who opens the generated CSV in software that evaluates formulas, enabling spreadsheet-side data access or command execution.

The record

CVE
CVE-2023-48207
Published
Dec 7, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1236, T1204.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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.

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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
Privilegesauthenticated
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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