CVE-2021-25962Network attack vector

Spreadsheet formula execution via unsanitized report exports

Published Sep 29, 2021 · Updated Sep 17, 2024

Formula injection in Shuup 0.4.2 through 2.10.8 allows remote authenticated users to execute spreadsheet formulas through billing names. The report writers pass billing-name data into CSV and Excel cells without removing formula-triggering characters, so a spreadsheet interprets the stored payload as a formula. Execution requires a store administrator to export the report and open it in a spreadsheet application, where the formula runs with that administrator’s access.

CVSS severity8.0
High
EPSS probability1.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Formula injection in Shuup 0.4.2 through 2.10.8 allows remote authenticated users to execute spreadsheet formulas through billing names. The report writers pass billing-name data into CSV and Excel cells without removing formula-triggering characters, so a spreadsheet interprets the stored payload as a formula. Execution requires a store administrator to export the report and open it in a spreadsheet application, where the formula runs with that administrator’s access.

The record

CVE
CVE-2021-25962
Published
Sep 29, 2021
Updated
Sep 17, 2024
Vendor
Shuup Commerce Inc.
Product
Shuup
Classifications
CWE-1236, T1204.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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 <*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shuup Commerce Inc. · Shuupversion=0.4.2 <*

Published CVSS scores

8.0GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.

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

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 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.

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Technologies

Your stack

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Your stack

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