CVE-2023-3462Network attack vector

LDAP account enumeration via distinguishable login errors

Published Jul 31, 2023 · Updated Oct 21, 2024

Information disclosure in HashiCorp Vault and Vault Enterprise 1.13.0 through 1.13.4 and 1.14.0 allows remote attackers to enumerate LDAP accounts. The LDAP auth login path returns distinguishable HTTP error responses depending on whether a submitted username exists in the configured directory. Exploitation requires an enabled, network-reachable LDAP auth method and reveals account validity without granting authentication or access to stored secrets.

CVSS severity5.3
Medium
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in HashiCorp Vault and Vault Enterprise 1.13.0 through 1.13.4 and 1.14.0 allows remote attackers to enumerate LDAP accounts. The LDAP auth login path returns distinguishable HTTP error responses depending on whether a submitted username exists in the configured directory. Exploitation requires an enabled, network-reachable LDAP auth method and reveals account validity without granting authentication or access to stored secrets.

The record

CVE
CVE-2023-3462
Published
Jul 31, 2023
Updated
Oct 21, 2024
Vendor
HashiCorp
Product
Vault
Classifications
CWE-203, T1087
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.13.0 <=1.13.4
  2. Affected versionversion=1.14.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HashiCorp · Vaultversion=1.13.0 <=1.13.4; version=1.14.0
HashiCorp · Vault Enterpriseversion=1.13.0 <=1.13.4; version=1.14.0

Published CVSS scores

5.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-203Observable Discrepancy
T1087Account Discovery

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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