Information disclosure in Parse Server - CVE-2026-57481
Published: June 30, 2026
Vulnerability identifier: #VU135972
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-57481
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Parse Community
Affected software:
Parse Server
Parse Server
Detailed vulnerability description
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper access control in LiveQuery enter and leave event handling when processing a save that changes both object field values and the subscriber's ACL read access. A remote user can subscribe to object updates and trigger or receive a crafted state change to disclose sensitive information.
The disclosure is limited to the single object affected by that save and only to the subscriber whose read access changed. Master-key subscribers are not affected.
How to mitigate CVE-2026-57481
Install security update from vendor's website.