CVE-2026-54243Network attack vector

Spreadsheet formula execution via unescaped export values

Published Jul 17, 2026 · Updated Jul 17, 2026

CSV formula injection in Statamic CMS before 5.73.24 and 6.0.0 through 6.20.0 allows remote attackers to execute spreadsheet formulas. CsvExporter.php writes untrusted form values through League CSV without registering a formula-escaping formatter for trigger characters. Anonymous front-end submission is sufficient, but execution requires a Control Panel user to export and open the CSV; effects are confined to the spreadsheet and data already authorized for that user.

CVSS severity6.1
Medium
EPSS probability0.34%
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 Statamic CMS before 5.73.24 and 6.0.0 through 6.20.0 allows remote attackers to execute spreadsheet formulas. CsvExporter.php writes untrusted form values through League CSV without registering a formula-escaping formatter for trigger characters. Anonymous front-end submission is sufficient, but execution requires a Control Panel user to export and open the CSV; effects are confined to the spreadsheet and data already authorized for that user.

The record

CVE
CVE-2026-54243
Published
Jul 17, 2026
Updated
Jul 17, 2026
Vendor
Statamic, LLC
Product
Statamic CMS
Classifications
CWE-1236, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 17, 2026Record 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=< 5.73.24
  2. Affected versionversion=>= 6.0.0, < 6.20.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Statamic, LLC · Statamic CMSversion=< 5.73.24; version=>= 6.0.0, < 6.20.1

Published CVSS scores

6.1GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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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