CVE-2021-32623

Opencast is a free and open source solution for automated video capture and distribution. Versions of Opencast prior to 9.6 are vulnerable to the billion laughs attack, which allows an attacker to easily execute a (seemingly permanent) denial of service attack, essentially taking down Opencast using a single HTTP request. To exploit this, users need to have ingest privileges, limiting the group of potential attackers The problem has been fixed in Opencast 9.6. There is no known workaround for this issue.

• CWE-776

• https://github.com/opencast/opencast/commit/8ae27da5a6f658011a5741b3210e715b0dc6213ePatch, Third Party Advisory
• https://github.com/opencast/opencast/security/advisories/GHSA-9gwx-9cwp-5c2mExploit, Third Party Advisory
• https://github.com/opencast/opencast/commit/8ae27da5a6f658011a5741b3210e715b0dc6213ePatch, Third Party Advisory
• https://github.com/opencast/opencast/security/advisories/GHSA-9gwx-9cwp-5c2mExploit, Third Party Advisory

Published

Jun 16, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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