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CVE-2026-57167— PeerTube: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Quick assessment

Affected
Chocobozzz PeerTube
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Chocobozzz PeerTube是Chocobozzz个人开发者开源的一款联邦式视频托管平台。 Chocobozzz PeerTube 8.2.2之前版本存在跨站脚本漏洞，该漏洞源于服务器端渲染的观看页面在JSON.stringify视频元数据时未转义小于、大于和斜杠字符，允许注入关闭脚本元素的字节序列，导致攻击者的视频访问者在实例源中执行任意HTML或JavaScript。

AI Predicted 7.2 Difficulty: Trivial EPSS 0.47% · P38

Affected Version Matrix 1

VendorProduct Version RangeStatus
Chocobozzz PeerTube < 8.2.2 affected
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I. Basic Information for CVE-2026-57167

Vulnerability Information
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Vulnerability Title
PeerTube: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
Web页面中脚本相关HTML标签转义处理不恰当(基本跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Chocobozzz PeerTube 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Chocobozzz PeerTube是Chocobozzz个人开发者开源的一款联邦式视频托管平台。 Chocobozzz PeerTube 8.2.2之前版本存在跨站脚本漏洞，该漏洞源于服务器端渲染的观看页面在JSON.stringify视频元数据时未转义小于、大于和斜杠字符，允许注入关闭脚本元素的字节序列，导致攻击者的视频访问者在实例源中执行任意HTML或JavaScript。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Chocobozzz PeerTube < 8.2.2 -

II. Public POCs for CVE-2026-57167

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III. Intelligence Information for CVE-2026-57167

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Patches & Fixes for CVE-2026-57167 (2)

Vendor Advisories for CVE-2026-57167 (1)

IV. Related Vulnerabilities

Same product: PeerTube
Same vendor: Chocobozzz
Same weakness: CWE-80

V. Comments for CVE-2026-57167

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