CVE-2021-39183CWE-79

Unsafe inline XSS Owncast

High · published December 14, 2021

CVSS v3.1
8.2
EPSS
1%
Percentile
55.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00772 · 55.2th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2021-12-14T20:05Z
EPSS history
Timeline
  • 14 DEC 20:05Z
    Unsafe inline XSS Owncast
    cvelistv5