VULNERABILITY INTELLIGENCE
CVE-2026-86257
CVSS score5.4 MEDIUM
EPSS probability0.28%
CISA KEVNot currently listed
Published2026-09-06
Last modified2026-09-08
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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.
Weakness classification
- disclosure@vulncheck.com: CWE-1236