{"id":"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.","aliases":["GHSA-xq9m-hmp9-fw87"],"modified":"2026-09-10T03:31:04.220532698Z","published":"2026-09-06T12:00:30.969Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86257.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-1236"]},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wger-project/wger","events":[{"introduced":"0"},{"fixed":"e1d70bcc38cd56ae4a254dca1713c404d069f319"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.6"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["2.5","2.4","2.3","2.0","1.9","1.8","1.7","1.5","1.4","1.3","1.2","1.1","1.0.3","1.0.2","1.0.1","1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86257.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}