CVE-2026-87806 Parse Server 9.0.0 Authentication Bypass via LDAP Empty Password
Unauthenticated attackers can bypass LDAP authentication in Parse Server by sending empty passwords, leading to account takeover if the directory allows anonymous binds.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-87806?
CVE-2026-87806 is a critical authentication bypass vulnerability in parse-community parse-server, published on 9 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Parse Server versions <= 8.6.87 and >= 9.0.0 < 9.10.1-alpha.7 contain an authentication bypass in the built-in LDAP authentication adapter. The adapter forwarded the client-supplied password to the directory without verifying that a password had been supplied, and treated any non-error response from the directory as proof of authentication. A zero-length credential turns an LDAP simple bind into the unauthenticated authentication mechanism described in RFC 4513 section 5.1.2, which some directories (including Active Directory in its default configuration) answer with success while mapping the connection to anonymous. As a result, an unauthenticated attacker who knows a directory username can obtain a valid session token for that account, resulting in account takeover. Only deployments that enable the LDAP authentication adapter are affected, and deployments whose directory refuses unauthenticated simple bind (such as a stock OpenLDAP configuration) are not exploitable. The issue is fixed in 8.6.88 and 9.10.1-alpha.7, which require the password to be a non-empty string and reject the request before contacting the directory.
Weakness: CWE-287
Which versions are affected by CVE-2026-87806?
1 open source package ship an affected version, including parse.
| Package | Affected | Fixed in |
|---|---|---|
parse Bitnami | All versions | 8.6.88, 9.10.1 |
How do I fix CVE-2026-87806?
Upgrade parse to a fixed version for your release line: 8.6.88 or 9.10.1.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-87806 being exploited?
There is no known exploitation of CVE-2026-87806 in the wild and no public exploit code.
Sources
Also known as BIT-parse-2026-87806, GHSA-863r-39r9-vfcf, GHSA-g24p-7jpj-4qf8.