CVE-2026-47138
Parse Server: Pre-authentication denial of service via client version header regex backtracking
描述
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.77 and 9.9.1, an unauthenticated attacker who knows a publicly-known Parse Application ID can submit a single HTTP request whose client SDK version field contains adversarial input that triggers polynomial backtracking in a request-header parser. The parsing runs before session authentication and before rate limiting on every /parse/* request, so the request consumes seconds to minutes of synchronous CPU on a Node.js worker before any access control evaluates it. A small number of concurrent requests can saturate a worker; a single large request via the body-field variant can pin a worker for minutes. Production deployments running the default configuration are affected. This issue has been patched in versions 8.6.77 and 9.9.1.
如何修補 CVE-2026-47138
要修補 CVE-2026-47138,請將受影響套件升級到下列已修補版本。
- —升級至 8.6.77 或更新版本
- —升級至 9.9.1-alpha.1 或更新版本
CVE-2026-47138 正在被利用嗎?
低 — EPSS 為 0.6%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 8.6.77, >= 9.0.0, < 9.9.1
- >= 9.0.0, < 9.9.1-alpha.1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |