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CVE-2026-92708— devalue序列化Node Buffer时跨请求内存泄露漏洞

一分钟漏洞结论

影响对象
sveltejs devalue
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。

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In versions 5.1.0 through 5.9.2, stringify and uneval functions serialize a typed array by emitting its entire backing ArrayBuffer rath

CVSS 7.5 · High

可能的 ATT&CK 技术 2 AI

T1079 T1133 · External Remote Services
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一、 漏洞 CVE-2026-92708 基础信息

漏洞信息
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Vulnerability Title
devalue: Cross-request process memory disclosure in devalue when `stringify` / `uneval` serialize Node Buffers
来源: CVE Program / CVE List V5
Vulnerability Description
Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In versions 5.1.0 through 5.9.2, stringify and uneval functions serialize a typed array by emitting its entire backing ArrayBuffer rather than only the view, so serializing a Node Buffer, whose backing store is a process-wide shared pool, discloses up to 64 KB of unrelated process memory, including bytes from other in-flight requests. In a server-side-rendered framework such as SvelteKit or Nuxt, a public page whose load() returns a small Buffer, or that reads a small file, can therefore ship another user's request body or Authorization header in its HTML without authentication. Because this occurs during serialization, it fires on every such render and is not mitigated by the parse/unflatten prototype-pollution and denial-of-service guards, which only apply when parsing untrusted input. As a workaround, convert Node Buffer objects to Uint8Array before serialization. This issue has been fixed in version 5.9.3.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
信息暴露
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
sveltejs devalue >= 5.1.0, < 5.9.3 -

二、漏洞 CVE-2026-92708 的公开POC

# POC 描述 源链接 神龙链接
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三、漏洞 CVE-2026-92708 的情报信息

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CVE-2026-92708 其他参考 (2)

CVE-2026-92708 其他参考 (1)

IV. Related Vulnerabilities

Same product: devalue
Same vendor: sveltejs
Same weakness: CWE-200

V. Comments for CVE-2026-92708

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