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CVE-2026-57480— Parse Server: Denial of service via exponential-time processing of deeply nested query operators

Quick assessment

Affected
parse-community parse-server
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.

Parse Platform Parse Server是Parse Platform组织开源的一个开源后端,可以部署到任何可以运行 Node.js 的基础设施。 Parse Platform Parse Server 9.9.1-alpha.12之前版本和8.6.82之前版本存在资源管理错误漏洞，该漏洞源于REST API或LiveQuery查询处理中深度嵌套的$or、$and、$nor查询条件运算符可能触发内部查询遍历助手中的指数时间处理并阻塞Node.js事件循环，可能导致拒绝服务。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.59% · P46

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 2

VendorProduct Version RangeStatus
parse-community parse-server >= 9.0.0-alpha.1, < 9.9.1-alpha.12 affected
< 8.6.82 affected
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I. Basic Information for CVE-2026-57480

Vulnerability Information
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Vulnerability Title
Parse Server: Denial of service via exponential-time processing of deeply nested query operators
Source: CVE Program / CVE List V5
Vulnerability Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.9.1-alpha.12 and 8.6.82, deeply nested $or, $and, and $nor query condition operators in the REST API or LiveQuery query handling could trigger exponential-time processing in the internal query-traversal helper and block the Node.js event loop. This issue is fixed in versions 9.9.1-alpha.12 and 8.6.82.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
算法复杂性
Source: CVE Program / CVE List V5
Vulnerability Title
Parse Platform Parse Server 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Parse Platform Parse Server是Parse Platform组织开源的一个开源后端,可以部署到任何可以运行 Node.js 的基础设施。 Parse Platform Parse Server 9.9.1-alpha.12之前版本和8.6.82之前版本存在资源管理错误漏洞，该漏洞源于REST API或LiveQuery查询处理中深度嵌套的$or、$and、$nor查询条件运算符可能触发内部查询遍历助手中的指数时间处理并阻塞Node.js事件循环，可能导致拒绝服务。
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
parse-community parse-server >= 9.0.0-alpha.1, < 9.9.1-alpha.12 -

II. Public POCs for CVE-2026-57480

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III. Intelligence Information for CVE-2026-57480

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Patches & Fixes for CVE-2026-57480 (5)

Vendor Advisories for CVE-2026-57480 (1)

Vendor Pages for CVE-2026-57480 (1)

Same Patch Batch · parse-community · 2026-07-08 · 3 CVEs total

CVE-2026-57481 Parse Server: LiveQuery discloses object data to a subscriber across an ACL read-access ch
CVE-2026-55778 Parse Server: Stored XSS via non-standard file extension bypassing file upload extension b

IV. Related Vulnerabilities

Same product: parse-server
Same vendor: parse-community
Same weakness: CWE-407

V. Comments for CVE-2026-57480

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