EUVD-2026-72113
GHSA-pmr9-wpc3-f495
Severity by source
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable, low complexity; requires authenticated member (PR:L) and admin opening exported file (UI:R); scope changes to admin's local spreadsheet context (S:C) with low confidentiality and integrity impact.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
CSV/TSV formula injection in wger's gym member export endpoint allows any authenticated gym member to pre-load spreadsheet formulas into their own first_name or last_name profile fields, which are then reproduced verbatim in the TSV export file. When a gym administrator opens the exported file in Excel, LibreOffice Calc, or Google Sheets, the formula executes in the admin's local spreadsheet context, enabling data exfiltration via =HYPERLINK callbacks and, on legacy Excel deployments with DDE enabled, arbitrary local code execution. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid gym member account on the target wger instance - self-registration lowers this barrier on publicly accessible deployments. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 base score of 4.8 reflects the constrained real-world impact: vulnerable-system confidentiality and integrity are both N (the wger server itself is not compromised), while the subsequent-system impact is low (SC:L/SI:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade wger to version 2.6, which includes formula-prefix sanitization in wger/gym/views/export.py. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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