CVE-2021-39183

Unsafe inline XSS Owncast

State: Published
Severity: 8.2 High
Published: Dec 14, 2021
Updated: Aug 4, 2024
Reserved: Aug 16, 2021

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.2 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:L	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
owncastowncast	< 0.0.9Affected

References

https://github.com/owncast/owncast/security/advisories/GHSA-2hfj-cxw7-g45p

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