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.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 08 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 06 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
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.
Title wger before 2.6 CSV Formula Injection via member export
First Time appeared Wger
Wger wger
Weaknesses CWE-1236
CPEs cpe:2.3:a:wger:wger:*:*:*:*:*:*:*:*
Vendors & Products Wger
Wger wger
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-08T15:10:52.649Z

Reserved: 2026-09-06T11:35:19.317Z

Link: CVE-2026-86257

cve-icon Vulnrichment

Updated: 2026-09-08T15:10:18.507Z

cve-icon NVD

Status : Deferred

Published: 2026-09-06T12:17:16.700

Modified: 2026-09-08T19:59:42.500

Link: CVE-2026-86257

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-06T14:15:08Z

Weaknesses