Improper Neutralization of Formula Elements in a CSV File in wger - #VU128290
Published: April 28, 2026
Vulnerability identifier: #VU128290
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-1236
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: wger Project
Affected software:
wger
wger
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code or disclose sensitive information.
The vulnerability exists due to improper neutralization of formula elements in a CSV file in the gym member TSV export endpoint when exporting user profile fields to TSV cells. A remote attacker can store a specially crafted spreadsheet formula in their own first_name or last_name fields to execute arbitrary code or disclose sensitive information.
The issue is triggered when a gym administrator exports the member list and opens the resulting file in a formula-evaluating spreadsheet application; legacy Excel with DDE enabled may allow arbitrary local code execution.
Remediation
Install security update from vendor's website.