HOMEVULNERABILITIESCVE-2020-5228
HIGH

CVE-2020-5228

CWE-862Published: January 30, 2020· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

Opencast before 8.1 and 7.6 allows unauthorized public access to all media and metadata by default via OAI-PMH. OAI-PMH is part of the default workflow and is activated by default, requiring active user intervention of users to protect media. This leads to users unknowingly handing out public access to events without their knowledge. The problem has been addressed in Opencast 7.6 and 8.1 where the OAI-PMH endpoint is configured to require users with `ROLE_ADMIN` by default. In addition to this, Opencast 9 removes the OAI-PMH publication from the default workflow, making the publication a conscious decision users have to make by updating their workflows.

NVD Source

Technical Analysis

CVE-2020-5228 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

apereo1 product(s)
opencast
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/opencast/opencast/blob/1fb812c7810c78f09f29a7f455ff920417924307/etc/security/mh_default_org.xml#L271-L276
PATCHhttps://github.com/opencast/opencast/blob/1fb812c7810c78f09f29a7f455ff920417924307/etc/security/mh_default_org.xml#L271-L276
ADVISORYhttps://github.com/opencast/opencast/security/advisories/GHSA-6f54-3qr9-pjgj
ADVISORYhttps://github.com/opencast/opencast/security/advisories/GHSA-6f54-3qr9-pjgj

All References (4)

→
https://github.com/opencast/opencast/blob/1fb812c7810c78f09f29a7f455ff920417924307/etc/security/mh_default_org.xml#L271-L276Patch
→
https://github.com/opencast/opencast/security/advisories/GHSA-6f54-3qr9-pjgjMitigation · Third Party Advisory
→
https://github.com/opencast/opencast/blob/1fb812c7810c78f09f29a7f455ff920417924307/etc/security/mh_default_org.xml#L271-L276Patch
→
https://github.com/opencast/opencast/security/advisories/GHSA-6f54-3qr9-pjgjMitigation · Third Party Advisory

Quick Facts

CVE IDCVE-2020-5228
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-862
CISA KEVNo
Affected1 vendor(s)
PublishedJan 30, 2020

Related CVEs (CWE-862)

CVE-2026-0092
10.0
CVE-2024-2086
10.0
CVE-2024-52416
10.0
CVE-2025-45854
10.0
CVE-2026-34976
10.0
CVE-2024-33566
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-5228 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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