XSS in Opencast

CVE-2026-77615

Paella Player is a set of libraries to create a multi stream video player. Prior to Paulla Player 2.12.11 (as used in Opencast prior to 19.7 and 20.2), there is a potential XSS attack though closed captions cue text. This vulnerability is fixed in 2.12.11.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-77615?
CVE-2026-77615 is a high-severity vulnerability in Opencast, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-09-17.
How severe is CVE-2026-77615?
High severity. CVSS v3 base score is 8.7 out of 10.