CVE-2026-123487

HighCVSS 7.5/10Last modified Nov 6, 2026

Description

Parse Server before 8.6.115 and 9.0.0 before 9.10.7-alpha.1 validates user email address format with a regular expression whose run time grows quadratically with input length and that is applied without a length limit. An unauthenticated attacker who knows the application ID can send a sign-up request, or a logged-in user can update their own email, with a long crafted email address to block the Node.js event loop and deny service to all clients.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-1333

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
parse-community	parse-server	>= 9.0.0, < 9.10.7-alpha.1
parse-community	parse-server	< 8.6.115

References

Timeline

Published: Nov 6, 2026
Last modified: Nov 6, 2026
NVD status: Awaiting Analysis

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