CVE-2026-87806 Parse Server - Authentication Bypass

Parse Server <= 8.6.87 and >= 9.0.0 < 9.10.1-alpha.7 contain an authentication bypass caused by improper handling of zero-length passwords in the LDAP authentication adapter, letting unauthenticated attackers obtain valid session tokens, exploit requires LDAP authentication adapter enabled and directory allowing unauthenticated simple bind.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.51% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
9 September 2026
Updated
15 October 2026
Weakness
CWE-287

Vendor fix

Upgrade to versions 8.6.88 or 9.10.1-alpha.7 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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