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Vulnerabilities

Vulnerability · GHSA-w6j9-q9rq-wrqg

Formula injection in CSV exports (CSV injection)

Published Aug 18, 2026 · catalog updated Aug 18, 2026 · Formula injection in CSV

Last checked Nov 1, 2026. A connected source was read within the last 7 days.

Open the advisory

Exploitation likelihood is not on this record for GHSA-w6j9-q9rq-wrqg. A missing EPSS score is not a low risk. Compare Formula injection in CSV with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Formula injection in CSV).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
High8.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Awaiting synchronization with FIRST
Remediation
Version ranges on file
Affected products
composer prestashop/prestashop

### Impact This is a formula injection issue in the files exported by PrestaShop, commonly known as CSV injection. Spreadsheet applications treat cells beginning with certain characters as formulas rather than text. PrestaShop wrote exported values as-is, without neutralising those characters. The person at risk is not the shop server but whoever opens the export: a merchant, an employee, an accountant, or the customer themselves for the GDPR export. ### Patches Upgrade to 9.1.5 or 8.2.8 ### Workarounds The risk can be reduced without upgrading, though this relies on merchant discipline rather than on the application: - do not open exported CSV files by double-clicking them, open your spreadsheet application first and use its text-import wizard, setting every column to "text"; - keep your spreadsheet application up to date and never accept a prompt asking to enable content or update links when opening an export; - if you only need to read an export, open it in a plain text editor; - correct any back-office value that looks unusual, for example an alias or a name starting with , , or — before exporting. ### References - [CWE-1236: Improper Neutralization of Formula Elements in a CSV File](https://cwe.mitre.org/data/definitions/1236.html) - [OWASP: CSV Injection](https://owasp.org/www-community/attacks/CSV_Injection) - Report a security issue: security-core@prestashop.com --- _Credits: this vulnerability was responsibly reported to the PrestaShop security team by **Suphawith Phusanbai** (ILOVEPEPPERONI). We thank them for their report and for coordinating the disclosure with us.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • composer prestashop/prestashop>= 8.0.0, < 8.2.8
  • composer prestashop/prestashop>= 9.0.0, < 9.1.5

How to fix GHSA-w6j9-q9rq-wrqg

  • Upgrade

    GHSA-w6j9-q9rq-wrqg lists a fix boundary at 8.2.8. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 8.2.8

  • Advisory

    Open the inventory_github record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for GHSA-w6j9-q9rq-wrqg. A missing EPSS score is not a low risk. Compare Formula injection in CSV with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with >= 8.0.0, < 8.2.8, >= 9.0.0, < 9.1.5. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

PrestaShop security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 18, 2026 · Maintainer security tabs

    Detected

    ### Impact This is a formula injection issue in the files exported by PrestaShop, commonly known as CSV injection. Spreadsheet applications treat cells beginning with certain characters as formulas rather than text. PrestaShop wrote exported values as-is, without neutralising those characters. The person at risk is not the shop server but whoever opens the export: a merchant, an employee, an accou

Sources

  • Maintainer security tabsVendor advisoryGHSA-w6j9-q9rq-wrqg

    ### Impact This is a formula injection issue in the files exported by PrestaShop, commonly known as CSV injection. Spreadsheet applications treat cells beginning with certain characters as formulas rather than text. PrestaShop wrote exported values as-is, without neutralising those characters. The person at risk is not the shop server but whoever opens the export: a merchant, an employee, an accou

    github.com

Freshness

Last verified in this catalog Aug 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Maintainer security tabsNov 1, 2026