CVE-2020-5206

Authentication Bypass For Endpoints With Anonymous Access in Opencast

Published 30 Jan 2020Modified 17 Jun 2026CWE 285, 287

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

GHSA8.7CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Trivy's own label is CRITICAL. Rated critical by NVD, GHSA.

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

Affected packages and fixed versions

Source	Package	Fixed in
maven::GitHub Security Advisory Maven	org.opencastproject:opencast-kernel	7.6, 8.1

References

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