CVE-2023-20859

Batch-token disclosure via failed-revocation logging

Published Mar 23, 2023 · Updated Feb 25, 2025

Sensitive data exposure in Spring Vault before 2.3.3 and 3.0.0 through 3.0.1 allows local users to obtain a Vault batch token from logs. LifecycleAwareSessionManager.destroy() logs the token when batch-token revocation returns a Vault error or encounters an I/O failure. Exposure requires imperative-only session management, batch tokens, destroy invocation, failed revocation, and WARN-or-more-detailed logging.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive data exposure in Spring Vault before 2.3.3 and 3.0.0 through 3.0.1 allows local users to obtain a Vault batch token from logs. LifecycleAwareSessionManager.destroy() logs the token when batch-token revocation returns a Vault error or encounters an I/O failure. Exposure requires imperative-only session management, batch tokens, destroy invocation, failed revocation, and WARN-or-more-detailed logging.

The record

CVE
CVE-2023-20859
Published
Mar 23, 2023
Updated
Feb 25, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-532, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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.

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No observations available

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

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552.001Unsecured Credentials: Credentials In Files

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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