CVE-2026-57167

MEDIUM

PeerTube: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Title source: cna
STIX 2.1

Description

PeerTube is an ActivityPub-federated video streaming platform. Prior to 8.2.2, server-side-rendered video watch pages embed a schema.org JSON-LD block by JSON.stringify-ing video metadata without escaping less-than, greater-than, or slash characters, allowing a value containing the byte sequence that closes a script element to inject arbitrary HTML or JavaScript that executes in the instance origin for visitors to the attacker's videos. This issue is fixed in version 8.2.2.

References (3)

Core 3

Scores

CVSS v4 5.1
EPSS 0.0027
EPSS Percentile 18.8%
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-80
Status published
Products (1)
Chocobozzz/PeerTube < 8.2.2
Published Jul 10, 2026
Tracked Since Jul 10, 2026