CVE-2023-51298Public exploitNetwork attack vector

Formula execution via unsanitized CSV labels

Published Feb 19, 2025 · Updated Feb 20, 2025

CSV injection in PHPJabbers Event Booking Calendar 4.0 allows remote attackers to execute formulas through exported label data. The Languages section accepts Label parameter values without neutralizing formula-leading characters before constructing a CSV file. Execution requires a user to open the exported file in a formula-aware spreadsheet, where the injected formula runs in that user's context.

CVSS severity4.7
Medium
EPSS probability0.41%
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 Event Booking Calendar 4.0 allows remote attackers to execute formulas through exported label data. The Languages section accepts Label parameter values without neutralizing formula-leading characters before constructing a CSV file. Execution requires a user to open the exported file in a formula-aware spreadsheet, where the injected formula runs in that user's context.

The record

CVE
CVE-2023-51298
Published
Feb 19, 2025
Updated
Feb 20, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1236, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 20, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.7CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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.

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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
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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