OCTOBER 9, 2026
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Case File

CVE-2026-100631

HIGH · CVSS 7.5 EPSS 0.36% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-26 · Last synced 2026-10-09

CyberRota Analysis

AI-Generated

The vulnerability affects Parse Server versions prior to 8.6.90 and from 9.0.0 to 9.10.1-alpha.9, allowing unauthenticated remote attackers to exploit improper validation of client-supplied installation fields. This can lead to the deletion of all device registrations or a targeted subset, disrupting push notifications without any user interaction or authentication required. Organizations using Parse Server with exposed REST APIs for push notifications should prioritize upgrading to the patched versions to mitigate this critical risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-100631
Severity
HIGH
CVSS
7.5
EPSS
0.36%

Original NVD Description

Parse Server is an open source backend server. In versions prior to 8.6.90 and in versions from 9.0.0 prior to 9.10.1-alpha.9, the device token deduplication logic for installation records does not validate the type of client-supplied installation fields before using them to build database queries. An unauthenticated remote attacker who knows only the public application ID can submit non-string values in these fields to inject query operators, causing the deduplication cleanup — which runs with elevated privileges before class-level permissions are evaluated — to delete every device registration in the application or an attacker-chosen subset of them. No account, session token, master key, or user interaction is required. Deleted registrations cannot be recovered on the server, so push notifications cannot be delivered until every client re-registers. Any deployment that exposes the REST API to clients and uses push notifications is affected in its default configuration. Versions 8.6.90 and 9.10.1-alpha.9 fix the issue by rejecting non-string values with a client error and by scoping the deduplication cleanup to the calling application. No workaround other than upgrading is available.