CVE-2026-86257

wger before 2.6 fails to sanitize first_name and last_name fields in the gym member TSV export endpoint, allowing any gym member to inject spreadsheet formulas. Attackers can inject formulas like =HYPERLINK to exfiltrate admin data or execute code when admins open the exported file in Excel or LibreOffice Calc.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/wger-project/wger/security/advisories/GHSA-xq9m-hmp9-fw87
https://www.vulncheck.com/advisories/wger-before-2.6-csv-formula-injection-via-member-export
https://github.com/wger-project/wger/security/advisories/GHSA-xq9m-hmp9-fw87

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-06 12:17

Updated : 2026-09-08 19:59

NVD link : CVE-2026-86257

Mitre link : CVE-2026-86257

CVE.ORG link : CVE-2026-86257

JSON object : View

Products Affected

No product.

CWE

CWE-1236

Improper Neutralization of Formula Elements in a CSV File

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