CVE-2026-86257
Medium · CVSS 4.8Published 2026-09-06
CVSS
4.8
Medium
EPSS
—
exploit probability
Active Exploit
No
not yet listed
What is CVE-2026-86257?
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.
CVSS Score Explained
CVSS 4.8 is Medium severity. Exploitation usually requires some specific conditions (local access, user interaction, or a particular config). Still worth patching in your next maintenance window.
EPSS Exploitation Probability
No EPSS score yet — model needs more data on this CVE.
References & Patches
- ›https://github.com/wger-project/wger/security/advisories/GHSA-xq9m-hmp9-fw87
- ›https://www.vulncheck.com/advisories/wger-before-2.6-csv-formula-injection-via-member-export
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This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)8.8