{"id":"CVE-2026-86257","aliases":["GHSA-xq9m-hmp9-fw87"],"url":"https://o3.security/vulnerability/CVE-2026-86257","summary":"wger before 2.6 CSV Formula Injection via member export","details":"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.","published":"2026-09-06T12:00:30.969Z","modified":"2026-09-10T03:31:04.220532698Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"PyPI","name":"wger","fixedVersion":"2.6"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86257.json"},{"type":"ADVISORY","url":"https://github.com/wger-project/wger/security/advisories/GHSA-xq9m-hmp9-fw87"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86257"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/wger-before-2.6-csv-formula-injection-via-member-export"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-10T03:31:04.220532698Z"}}