CVE-2026-86257

medium

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.

References

https://www.vulncheck.com/advisories/wger-before-2.6-csv-formula-injection-via-member-export

https://github.com/wger-project/wger/security/advisories/GHSA-xq9m-hmp9-fw87

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-72113

Details

Source: Mitre, NVD

Published: 2026-09-06

Updated: 2026-09-08

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.4

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

CVSS v4

Base 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

Severity: Medium

EPSS

EPSS: 0.00277