CVE-2021-39183highCWE-79

CVE-2021-39183: high-severity vulnerability in owncast

Unsafe inline XSS Owncast

Published · Updated

Follow this CVE+ Monitor owncast+ Monitor github.com/owncast/owncast

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.2epss 0.8%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:L
Affected products
owncast · owncast
Related CVEs — owncast

In the same product, most dangerous first.

CVE-2024-31450LOWOwncast vulnerable to arbitrary file deletion in emoji.go (GHSL-2023-277)EPSS 1.0%CVE-2024-29026HIGHOwncast cross origin requestEPSS 0.4%