CVE-2021-25962: Shuup - Formula Injection in Checkout Addresses

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-09-29 · updated 2026-06-17
Weakness: CWE-1236

Description

“Shuup” application in versions 0.4.2 to 2.10.8 is affected by the “Formula Injection” vulnerability. A customer can inject payloads in the name input field in the billing address while buying a product. When a store administrator accesses the reports page to export the data as an Excel file and opens it, the payload gets executed.

Affected products

shuup: from 0.4.2 before 2.11.0 — fixed in 2.11.0

How to fix

Upgrade to a fixed version: shuup 2.11.0. Check the vendor advisory for mitigations.

References

https://github.com/shuup/shuup/commit/0a2db392e8518410c282412561461cd8797eea51
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25962
https://github.com/shuup/shuup/commit/0a2db392e8518410c282412561461cd8797eea51
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25962

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