CVE-2026-19501Public exploitNetwork attack vector

Spreadsheet formula execution via CSV field names

Published Aug 18, 2026 · Updated Aug 19, 2026

CSV injection in SureForms 2.12.1 and earlier allows remote attackers to execute spreadsheet formulas on an administrator workstation. The CSV export path writes user-controlled form field names into exported headers without neutralizing leading formula characters, so labels beginning with =, +, -, or @ are interpreted as formulas when the file is opened in spreadsheet software. Exploitation requires a form submission and an administrator who exports entries and opens the CSV in a vulnerable spreadsheet application; the disclosed impact is limited to formula execution in that client context.

CVSS severityUnavailable
Unscored
EPSS probability0.47%
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 SureForms 2.12.1 and earlier allows remote attackers to execute spreadsheet formulas on an administrator workstation. The CSV export path writes user-controlled form field names into exported headers without neutralizing leading formula characters, so labels beginning with =, +, -, or @ are interpreted as formulas when the file is opened in spreadsheet software. Exploitation requires a form submission and an administrator who exports entries and opens the CSV in a vulnerable spreadsheet application; the disclosed impact is limited to formula execution in that client context.

The record

CVE
CVE-2026-19501
Published
Aug 18, 2026
Updated
Aug 19, 2026
Vendor
Presto Made, Inc.
Product
SureForms
Classifications
T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 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=0 <=2.12.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Presto Made, Inc. · SureFormsversion=0 <=2.12.1

Published CVSS scores

No CVSS assessment is available in this record.

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

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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