{"cve":"CVE-2020-5206","nvd":{"published":"2020-01-30T22:15:10.093","modified":"2026-06-17T03:21:01.400","status":"Modified","description":"In Opencast before 7.6 and 8.1, using a remember-me cookie with an arbitrary username can cause Opencast to assume proper authentication for that user even if the remember-me cookie was incorrect given that the attacked endpoint also allows anonymous access. This way, an attacker can, for example, fake a remember-me token, assume the identity of the global system administrator and request non-public content from the search service without ever providing any proper authentication. This problem is fixed in Opencast 7.6 and Opencast 8.1","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N","score":10.0},"cwes":["CWE-287","CWE-285"],"references":["https://github.com/opencast/opencast/commit/b157e1fb3b35991ca7bf59f0730329fbe7ce82e8","https://github.com/opencast/opencast/security/advisories/GHSA-vmm6-w4cf-7f3x","https://github.com/opencast/opencast/commit/b157e1fb3b35991ca7bf59f0730329fbe7ce82e8","https://github.com/opencast/opencast/security/advisories/GHSA-vmm6-w4cf-7f3x"],"products":["apereo:opencast"],"source":"nvd","synced_at":"2026-10-19T21:01:01.339895972+00:00"},"epss":{"cve":"CVE-2020-5206","score":0.01293,"percentile":0.7031,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vmm6-w4cf-7f3x","url":"https://osv.dev/vulnerability/GHSA-vmm6-w4cf-7f3x","summary":"Authentication Bypass For Endpoints With Anonymous Access in Opencast","modified":"2026-09-10T03:48:42.567224822Z","packages":[{"ecosystem":"Maven","name":"org.opencastproject:opencast-kernel","purl":"pkg:maven/org.opencastproject/opencast-kernel","ranges":["<7.6"],"fixed":["7.6"]},{"ecosystem":"Maven","name":"org.opencastproject:opencast-kernel","purl":"pkg:maven/org.opencastproject/opencast-kernel","ranges":[">=8.0 <8.1"],"fixed":["8.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}