Information disclosure in Apereo Opencast
CVE-2025-61906
Opencast is a free, open-source platform to support the management of educational audio and video content. Prior to Opencast 17.8 and 18.2, in some situations, Opencast's editor may publish a video without notifying the user. This may lead to users accidentally publishing media not meant for publishing, and thus possibly exposing internal media. This risk of this actually impacting someone is very low, though. This can only be triggered by users with write access to an event. They also have to use the editor, which is usually an action taken if they want to publish media and not something users would use on internal media they do not want to publish. Finally, they have to first click on "Save & Publish" before then selecting the "Save" option. Nevertheless, while very unlikely, this can happen. This issue is fixed in Opencast 17.8 and 18.2.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (19.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Apereo Opencast
- Opencast — versions < 17.8, >= 18.0, < 18.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/opencast/opencast/security/advisories/GHSA-x6vw-p693-jjhv (Vendor Advisory)
- github.com/opencast/opencast-editor/issues/1626 (Exploit, Issue Tracking)
- github.com/opencast/opencast-editor/commit/98ba1934f08f623f1537a9675cc452d80376… (Patch)
Frequently asked questions
- What is CVE-2025-61906?
- CVE-2025-61906 is a medium-severity vulnerability in Apereo Opencast, classified under Information Disclosure. CVSS score: 4.3/10. Published 2025-10-08.
- How severe is CVE-2025-61906?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2025-61906 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.