PT-2026-25984 · Npm · Parse Server

Published 2026-03-17 · Updated 2026-03-17 · CVE-2026-32770

OSV

CVSS v3.1

5.9

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Fix

Weakness Enumeration

CWE-248

Related Identifiers

CVE-2026-32770

GHSA-827P-G5X5-H86C

Affected Products

Parse Server

References · 5

• https://osv.dev/vulnerability/GHSA-827p-g5x5-h86c · Vendor Advisory
• https://github.com/parse-community/parse-server · Note
• https://github.com/parse-community/parse-server/pull/10197 · Note
• https://github.com/parse-community/parse-server/pull/10199 · Note
• https://github.com/parse-community/parse-server/security/advisories/GHSA-827p-g5x5-h86c · Note