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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.

PUBLISHED Reserved 2026-06-24 | Published 2026-07-10 | Updated 2026-07-10 | Assigner GitHub_M




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Problem types

CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Product status

< 8.2.2
affected

References

github.com/...erTube/security/advisories/GHSA-jxwq-h9xv-hr28

github.com/...ommit/45394d701b08e87d72b8f0c1866b881f2becbde3

github.com/Chocobozzz/PeerTube/releases/tag/v8.2.2

cve.org (CVE-2026-57167)

nvd.nist.gov (CVE-2026-57167)

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