Parse Server LiveQuery subscription with invalid regular expression crashes server

高 7.5CVE-2026-32770 · BIT-parse-2026-32770 · GHSA-827p-g5x5-h86c · 18/03/2026 公開 · 17/06/2026 更新

パッケージ	影響を受けるバージョン	修正済みバージョン
parse-server parseplatform	`= 9.6.0≥ 9.0.0, < 9.6.0< 8.6.43`	`9.6.08.6.43`
parse-server npm	`≥ 9.0.0, < 9.6.0-alpha.19< 8.6.43`	`9.6.0-alpha.198.6.43`

概要

Impact

A remote attacker can crash the Parse Server by subscribing to a LiveQuery with an invalid regular expression pattern. The server process terminates when the invalid pattern reaches the regex engine during subscription matching, causing denial of service for all connected clients.

Patches

The fix validates regular expression patterns at subscription time, rejecting invalid patterns before they are stored. Additionally, a defense-in-depth try-catch prevents any subscription matching error from crashing the server process.

Workarounds

Disable LiveQuery if it is not needed.

NVD の説明

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.19 and 8.6.43, a remote attacker can crash the Parse Server by subscribing to a LiveQuery with an invalid regular expression pattern. The server process terminates when the invalid pattern reaches the regex engine during subscription matching, causing denial of service for all connected clients. The fix in 9.6.0-alpha.19 and 8.6.43 validates regular expression patterns at subscription time, rejecting invalid patterns before they are stored. Additionally, a defense-in-depth try-catch prevents any subscription matching error from crashing the server process. As a workaround, disable LiveQuery if it is not needed.