CVSS 3.1
10.0 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:NCVE-2020-5206
Critical (10.0) in apereo opencast. EPSS 1.3% chance of exploitation in the next 30 days. Fixed in org.opencastproject:opencast-kernel 7.6, 8.1.
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
Severity
- EPSS
- 1.3% chance of exploitation in the next 30 days; higher than 70% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-287, CWE-285
- Published
- Modified
- Record from
- the NVD, synced
Affected
- apereo:opencast
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-vmm6-w4cf-7f3x | Maven | org.opencastproject:opencast-kernel | <7.6 | 7.6 |
| GHSA-vmm6-w4cf-7f3x | Maven | org.opencastproject:opencast-kernel | >=8.0 <8.1 | 8.1 |
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