{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-86256","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-09-06T11:35:19.317Z","datePublished":"2026-09-06T12:00:30.256Z","dateUpdated":"2026-09-09T13:59:36.446Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-09-06T12:00:30.256Z"},"datePublic":"2026-04-28T00:00:00.000Z","title":"wger before 2.6 Open Redirect via trainer-login next parameter","descriptions":[{"lang":"en","value":"wger before 2.6 (affected versions <= 2.5.0) contains an open redirect vulnerability in the trainer_login view (wger/core/views/user.py). After a trainer enters impersonation mode, the view redirects to the user-supplied 'next' GET parameter via HttpResponseRedirect() without validating it with url_has_allowed_host_and_scheme(). An attacker who delivers a crafted link to an authenticated trainer can redirect the trainer's browser to an attacker-controlled domain, enabling phishing and leaking the wger URL structure (including the impersonated user's user_pk) via the Referer header."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"URL Redirection to Untrusted Site ('Open Redirect')","cweId":"CWE-601","type":"CWE"}]}],"affected":[{"vendor":"wger-project","product":"wger","defaultStatus":"unaffected","packageURL":"pkg:pypi/wger","versions":[{"version":"0","status":"affected","versionType":"custom","lessThan":"2.6"},{"version":"2.6","status":"unaffected","versionType":"custom"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:wger:wger:*:*:*:*:*:*:*:*","versionEndExcluding":"2.6"}]}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","baseScore":5.1,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://github.com/wger-project/wger/security/advisories/GHSA-vqv8-j3mj-wjxj","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-vqv8-j3mj-wjxj)"},{"name":"VulnCheck Advisory: wger before 2.6 Open Redirect via trainer-login next parameter","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/wger-before-2.6-open-redirect-via-trainer-login-next-parameter"}],"credits":[{"lang":"en","value":"whatisproblem","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"references":[{"url":"https://github.com/wger-project/wger/security/advisories/GHSA-vqv8-j3mj-wjxj","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-09T13:59:00.688174Z","id":"CVE-2026-86256","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-09T13:59:36.446Z"}}]}}