CVE-2026-77614 Opencast - Authentication Bypass

Opencast < 19.7 and < 20.2 contain a session fixation vulnerability caused by accepting client-selected JSESSIONID from URL path parameter without replacement on login, letting unauthenticated attackers hijack authenticated sessions, exploit requires victim to authenticate via crafted link.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.55% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Privilege Escalation, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
17 September 2026
Updated
15 October 2026
Weakness
CWE-384

Vendor fix

Update to versions 19.7 or 20.2 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs