CVE-2021-21302Network attack vector

Spreadsheet formula execution via unescaped CSV cells

Published Feb 26, 2021 · Updated Aug 3, 2024

CSV injection in PrestaShop 1.5.0 through 1.7.7.1 allows remote authenticated users to embed formulas in exported search data. ModuleGraph::csvExport appends search legends and other nonnumeric cell values directly to semicolon-delimited output without neutralizing leading formula characters. Back-office access is required to export the CSV, and formula execution occurs only when the file is opened in a formula-aware spreadsheet.

CVSS severity7.2
High
EPSS probability1.37%
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 PrestaShop 1.5.0 through 1.7.7.1 allows remote authenticated users to embed formulas in exported search data. ModuleGraph::csvExport appends search legends and other nonnumeric cell values directly to semicolon-delimited output without neutralizing leading formula characters. Back-office access is required to export the CSV, and formula execution occurs only when the file is opened in a formula-aware spreadsheet.

The record

CVE
CVE-2021-21302
Published
Feb 26, 2021
Updated
Aug 3, 2024
Vendor
PrestaShop
Product
PrestaShop
Classifications
CWE-1236, T1204.002
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 26, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=>= 1.5.0, < 1.7.7.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

PrestaShop · PrestaShopversion=>= 1.5.0, < 1.7.7.2

Published CVSS scores

6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.8GitHubCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/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.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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