Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in Opencast - CVE-2025-61788
Published: April 23, 2026
Vulnerability identifier: #VU127024
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-61788
CWE-ID: CWE-80
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Apereo Foundation
Affected software:
Opencast
Opencast
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary script in a user's browser.
The vulnerability exists due to improper neutralization of script-related html tags in paella player 7 when rendering user-supplied metadata. A remote user can inject malicious html and javascript into metadata fields to execute arbitrary script in a user's browser.
Exploitation requires write access to the system, such as the ability to upload media and modify metadata.
How to mitigate CVE-2025-61788
Install security update from vendor's website.