CVE-2021-39183

Owncast is an open source, self-hosted live video streaming and chat server. In affected versions inline scripts are executed when Javascript is parsed via a paste action. This issue is patched in 0.0.9 by blocking unsafe-inline Content Security Policy and specifying the script-src. The worker-src is required to be set to blob for the video player.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.2 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:L
GitHub_MCNA
8.2 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:L
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 53%
VendorProductVersion
owncast_projectowncast
𝑥
< 0.0.9
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/owncast/owncast/security/advisories/GHSA-2hfj-cxw7-g45p
https://github.com/owncast/owncast/security/advisories/GHSA-2hfj-cxw7-g45p