CVE-2026-86257
wger before 2.6 CSV Formula Injection via member export
- State
- Published
- Severity
- 4.8 Medium
- Published
- Sep 6, 2026
- Updated
- Sep 8, 2026
- Reserved
- Sep 6, 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | 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 | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-1236 Improper Neutralization of Formula Elements in a CSV File
Affected Products
| Product | Versions |
|---|---|
wgerwger-project |
|
References
- GitHub Security Advisory (GHSA-xq9m-hmp9-fw87)vendor-advisory
- VulnCheck Advisory: wger before 2.6 CSV Formula Injection via member exportthird-party-advisory
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