What’s Vulnerable › Vulnerabilities
CVE-2026-47840: LDAP StartTLS unconditionally disables hostname verification
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-09 · updated 2026-07-09
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
- Cloud Foundry cf-deployment: before 56.2.0 — fixed in 56.2.0
- Cloud Foundry UAA: before 78.13.0 — fixed in 78.13.0
How to fix
Upgrade to a fixed version: Cloud Foundry cf-deployment 56.2.0; Cloud Foundry UAA 78.13.0. Check the vendor advisory for mitigations.
References
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