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  4. CVE 2026 47840 ldap starttls unconditionally disables hostname
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Back to active CVEs
High · CVSS 8.3CVE-2026-47840

LDAP StartTLS unconditionally disables hostname verificationCVE-2026-47840

Answer in brief

CVE-2026-47840 records a High severity (CVSS 8.3) vulnerability in LDAP StartTLS unconditionally disables hostname verification. The current sources do not mark it as known exploited. The current feed maps CloudFoundry Foundation/Cf-deployment (generic), CloudFoundry Foundation/UAA (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 9, 2026Updated Jul 9, 2026Source checked Nov 4, 2026First seen by HOL Jul 9, 2026Material review Jul 9, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.3
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 8.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps CloudFoundry Foundation/Cf-deployment (generic), CloudFoundry Foundation/UAA (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
CloudFoundry Foundation/Cf-deploymentgeneric>=0 <56.2.056.2.0
CloudFoundry Foundation/UAAgeneric>=0 <78.13.078.13.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for CloudFoundry Foundation/Cf-deployment, CloudFoundry Foundation/UAA.
  2. 2Review the reported fix. Update CloudFoundry Foundation/Cf-deployment to 56.2.0; CloudFoundry Foundation/UAA to 78.13.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Jul 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Jul 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Jul 9, 2026

Sources and claim methodology

  • Source referencecloudfoundry.org
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-297
Source
CVE List V5
Source checked
Nov 4, 2026
References
1 linked source
Open source record