CVE-2026-32770
Parse Server: LiveQuery subscription with invalid regular expression crashes server
描述
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0 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 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.
如何修補 CVE-2026-32770
要修補 CVE-2026-32770,請將受影響套件升級到下列已修補版本。
- —升級至 8.6.43 或更新版本
- —升級至 9.6.0-alpha.19 或更新版本
CVE-2026-32770 正在被利用嗎?
低 — EPSS 為 0.5%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 8.6.43, >= 9.0.0, < 9.6.0
- >= 9.0.0, < 9.6.0-alpha.19
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |