CVE-2020-5222

Name: CVE-2020-5222
Creator: NVD / NIST
Published: 2020-01-30T21:15:14.98+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.94%

Last modified Jun 17, 2026

CVE-2020-5222 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Opencast before 7.6 and 8.1 enables a remember-me cookie based on a hash created from the username, password, and an additional system key. This means that an attacker getting access to a remember-me token for one server can get access to all servers which allow log-in using the same credentials without ever needing the credentials. EPSS estimates a 0.94% chance of exploitation in the next 30 days.

Description

Opencast before 7.6 and 8.1 enables a remember-me cookie based on a hash created from the username, password, and an additional system key. This means that an attacker getting access to a remember-me token for one server can get access to all servers which allow log-in using the same credentials without ever needing the credentials. This problem is fixed in Opencast 7.6 and Opencast 8.1

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.94%

56.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apereo	Opencast	< 7.6
Apereo	Opencast	8.0

References

https://github.com/opencast/opencast/commit/1a7172c95af8d542a77ae5b153e4c834dd4788a6Patch
https://github.com/opencast/opencast/security/advisories/GHSA-mh8g-hprg-8363Mitigation, Third Party Advisory
https://github.com/opencast/opencast/commit/1a7172c95af8d542a77ae5b153e4c834dd4788a6Patch
https://github.com/opencast/opencast/security/advisories/GHSA-mh8g-hprg-8363Mitigation, Third Party Advisory

Timeline

Published: Jan 30, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-5222?

How severe is CVE-2020-5222?

CVE-2020-5222 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.94% probability of exploitation in the next 30 days.

How do I fix CVE-2020-5222?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-5222?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST