CVE-2026-22028— preact 安全漏洞
一分钟漏洞结论
影响对象
preactjs preact
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
preact是Preact开源的一个Java库。 preact 10.26.5版本存在安全漏洞，该漏洞源于JSON序列化保护减弱，可能导致HTML注入。
可能的 ATT&CK 技术 1 AI
T1059 · Command and Scripting Interpreter
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一、 漏洞 CVE-2026-22028 基础信息
漏洞信息
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Vulnerability Title
Preact has JSON VNode Injection issue
来源: CVE Program / CVE List V5
Vulnerability Description
Preact, a lightweight web development framework, JSON serialization protection to prevent Virtual DOM elements from being constructed from arbitrary JSON. A regression introduced in Preact 10.26.5 caused this protection to be softened. In applications where values from JSON payloads are assumed to be strings and passed unmodified to Preact as children, a specially-crafted JSON payload could be constructed that would be incorrectly treated as a valid VNode. When this chain of failures occurs it can result in HTML injection, which can allow arbitrary script execution if not mitigated by CSP or other means. Applications using affected Preact versions are vulnerable if they meet all of the following conditions: first, pass unmodified, unsanitized values from user-modifiable data sources (APIs, databases, local storage, etc.) directly into the render tree; second assume these values are strings but the data source could return actual JavaScript objects instead of JSON strings; and third, the data source either fails to perform type sanitization AND blindly stores/returns raw objects interchangeably with strings, OR is compromised (e.g., poisoned local storage, filesystem, or database). Versions 10.26.10, 10.27.3, and 10.28.2 patch the issue. The patch versions restore the previous strict equality checks that prevent JSON-parsed objects from being treated as valid VNodes. Other mitigations are available for those who cannot immediately upgrade. Validate input types, cast or validate network data, sanitize external data, and use Content Security Policy (CSP).
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
来源: CVE Program / CVE List V5
Vulnerability Type
使用不兼容类型访问资源(类型混淆)
来源: CVE Program / CVE List V5
Vulnerability Title
preact 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
preact是Preact开源的一个Java库。 preact 10.26.5版本存在安全漏洞，该漏洞源于JSON序列化保护减弱，可能导致HTML注入。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2026-22028 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-22028 厂商安全公告 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2026-22028
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