Most recent entries from all

cnvd-2021-51326

2026-10-04T00:08:40.353793+00:00

cnvd-2021-51326

EUVD-2026-27998

2026-10-04T00:08:40.353831+00:00

EUVD-2026-27998

fkie_cve-2021-32623

2026-10-04T00:08:40.353862+00:00

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.

GHSA-9gwx-9cwp-5c2m — Billion laughs attack (XML bomb)

2026-10-04T00:08:40.353896+00:00

Affected: Maven: org.opencastproject:opencast-kernel

### Impact

Opencast is vulnerable to the [Billion laughs attack](https://en.wikipedia.org/wiki/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.

Consider an XML file (`createMediaPackage.xml`) like this:

```xml ]>