{"cve":"CVE-2020-26234","nvd":{"published":"2020-12-08T23:15:12.060","modified":"2026-06-17T03:07:53.037","status":"Modified","description":"Opencast before versions 8.9 and 7.9 disables HTTPS hostname verification of its HTTP client used for a large portion of Opencast's HTTP requests. Hostname verification is an important part when using HTTPS to ensure that the presented certificate is valid for the host. Disabling it can allow for man-in-the-middle attacks. This problem is fixed in Opencast 7.9 and Opencast 8.8 Please be aware that fixing the problem means that Opencast will not simply accept any self-signed certificates any longer without properly importing them. If you need those, please make sure to import them into the Java key store. Better yet, get a valid certificate.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N","score":4.8},"cwes":["CWE-346"],"references":["https://github.com/opencast/opencast/commit/4225bf90af74557deaf8fb6b80b0705c9621acfc","https://github.com/opencast/opencast/security/advisories/GHSA-44cw-p2hm-gpf6","https://github.com/opencast/opencast/commit/4225bf90af74557deaf8fb6b80b0705c9621acfc","https://github.com/opencast/opencast/security/advisories/GHSA-44cw-p2hm-gpf6"],"products":["apereo:opencast"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2020-26234","score":0.00279,"percentile":0.20394,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-44cw-p2hm-gpf6","url":"https://osv.dev/vulnerability/GHSA-44cw-p2hm-gpf6","summary":"Disabled Hostname Verification in Opencast","modified":"2026-07-08T06:29:06.819272583Z","packages":[{"ecosystem":"Maven","name":"org.opencastproject:opencast-kernel","purl":"pkg:maven/org.opencastproject/opencast-kernel","ranges":["<7.9"],"fixed":["7.9"]},{"ecosystem":"Maven","name":"org.opencastproject:opencast-kernel","purl":"pkg:maven/org.opencastproject/opencast-kernel","ranges":[">=8.0 <8.9"],"fixed":["8.9"]}]}],"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."]}