Vulnerability · Published Jul 9, 2026 · Assigned by vmware
CVE-2026-47840LDAP StartTLS unconditionally disables hostname verification
High 7.5
In plain English
A high-severity security flaw in Cf-deployment from CloudFoundry Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).
Official description
A network attacker positioned between UAA and its LDAP directory can impersonate the directory using any certificate from any trusted CA, then harvest the LDAP bind password and every end-user password sent during simple-bind authentication, and return forged group memberships that grant themselves admin scopes. This affects every deployment that authenticates users against LDAP over StartTLS. Affected versions: UAA versions prior to v78.13.0; Cf-deployment versions prior to v56.2.0.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| CloudFoundry Foundation | UAA | 0 – before 78.13.0 |
| CloudFoundry Foundation | Cf-deployment | 0 – before 56.2.0 |