Improper Authentication in Parse Server - CVE-2026-87806
Published: September 15, 2026
Vulnerability identifier: #VU149930
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-87806
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to obtain a valid session token for any directory account.
The vulnerability exists due to improper authentication in the built-in LDAP authentication adapter when handling authentication requests with an empty password. A remote attacker can submit a directory username with an empty password to obtain a valid session token for any directory account.
Exploitation depends on the LDAP adapter being enabled and the directory accepting unauthenticated simple binds.
Affected software
Parse Server
How to mitigate CVE-2026-87806
Install security update from vendor's website.
Parse Server - addressed in versions 8.6.88, 9.10.1 alpha.7