CVE-2023-3302Public exploit

Spreadsheet formula execution via unescaped CSV fields

Published Jun 23, 2023 · Updated Nov 7, 2024

CSV formula injection in Admidio before 4.2.9 allows local users to execute spreadsheet formulas through exported list data. The convertColumnContentForOutput method in ListConfiguration copies CSV cell content verbatim, leaving leading @, =, +, or - characters to be interpreted as formulas. Exploitation requires a low-privileged user to place crafted content in an exported field and another user to open the CSV in a spreadsheet; effects depend on the spreadsheet's formula capabilities and security settings.

CVSS severity7.8
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSV formula injection in Admidio before 4.2.9 allows local users to execute spreadsheet formulas through exported list data. The convertColumnContentForOutput method in ListConfiguration copies CSV cell content verbatim, leaving leading @, =, +, or - characters to be interpreted as formulas. Exploitation requires a low-privileged user to place crafted content in an exported field and another user to open the CSV in a spreadsheet; effects depend on the spreadsheet's formula capabilities and security settings.

The record

CVE
CVE-2023-3302
Published
Jun 23, 2023
Updated
Nov 7, 2024
Vendor
Admidio
Product
Admidio
Classifications
CWE-1236, T1204.002
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 7, 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?

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

  1. Affected versionversion=0 <4.2.9
  2. Affected versionversion=unspecified <4.2.9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Admidio · Admidioversion=0 <4.2.9; version=unspecified <4.2.9

Published CVSS scores

7.3GitHubCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.6huntr.devCVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/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)
Vectorlocal
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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