Security readout for executives and security teams
Plain-English summary
A customer could place spreadsheet formula content in a Shuup checkout billing-name field. If an administrator later exports report data to Excel and opens it, the spreadsheet application may execute that content. The risk is indirect but business-relevant because customer input can cross into an admin workstation through normal reporting.
Executive priority
Prioritize remediation for internet-facing commerce sites where staff routinely export reports. This is not described as actively exploited in the provided sources, but it creates a credible path from customer input to administrator workstation compromise.
Technical view
CVE-2021-25962 is a CWE-1236 formula injection issue in Shuup versions 0.4.2 through 2.10.8. The reported path is billing address name input during purchase, followed by administrator report export to an Excel file. CVSS 3.1 is 8.0 high, with low attack complexity, low privileges, and required user interaction.
Likely exposure
Exposure is most likely for organizations running Shuup 0.4.2 to 2.10.8 that allow customer checkout accounts and have administrators exporting order or report data to Excel-compatible spreadsheets.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. Exploitation requires a customer-level input opportunity and an administrator opening the exported spreadsheet, so the practical risk depends on reporting workflows and endpoint controls.
Researcher notes
Evidence is limited to the CVE description, CVSS data, CWE-1236 classification, affected range, and a referenced Shuup commit. The bundle does not name a fixed release, operational workaround, or exploitation in the wild.
Mitigation direction
- Identify whether Shuup is deployed and confirm its version.
- Review Shuup vendor guidance and the referenced commit before selecting a fixed version.
- Upgrade or backport the vendor fix if running affected versions.
- Restrict report exports and spreadsheet opening to trusted administrative workflows until remediated.
- Treat exported spreadsheets containing customer input as untrusted files.
Validation and detection
- Inventory Shuup instances and compare versions against 0.4.2 through 2.10.8.
- Confirm whether checkout billing names appear in administrator Excel report exports.
- In a non-production environment, verify formula-like input is exported as plain text.
- Check that administrative reporting workflows no longer expose raw customer-controlled spreadsheet cells.
- Document compensating controls if upgrade timing is delayed.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CWE-1236: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-25962 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H2.15.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25962CVE reference · x_refsource_MISC
- https://github.com/shuup/shuup/commit/0a2db392e8518410c282412561461cd8797eea51CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Formula Elements in a CSV File
Improper Neutralization of Formula Elements in a CSV File represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.