CVE-2026-86257

MediumCVSS 5.4/10Last modified Sep 8, 2026

Description

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.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-1236

Affected software

No affected versions have been published.

Timeline

Published: Sep 6, 2026
Last modified: Sep 8, 2026
NVD status: Deferred

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