MinIO Java Client XML Tag Value Substitution Vulnerability

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N · score source

EPSS

• CVE-2025-59952: 0.49% estimated exploitation activity in the next 30 days; percentile 42.28 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Description In minio-java versions prior to 8.6.0, XML tag values containing references to system properties or environment variables were automatically substituted with their actual values during processing. This unintended behavior could lead to the exposure of sensitive information, including credentials, file paths, or system configuration details, if such references were present in XML content from untrusted sources. Affected Versions - minio-java < 8.6.0 All applications utilizing affected versions of minio-java for parsing XML with potentially untrusted input are vulnerable. Impact This vulnerability poses a high risk of information disclosure. Attackers could craft malicious XML inputs to extract sensitive data from the system's properties or environment variables, potentially compromising security in applications relying on minio-java for object storage operations. Patches The issue is resolved in minio-java version 8.6.0 and later. In these versions, automatic substitution…

Published by the source

29 Sep 2025, 17:53 UTC

Last modified by the source

30 Sep 2025, 15:14 UTC

Source last checked

26 Oct 2026, 16:40 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-h7rh-xfpj-hpcm

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# Patch Next advisory brief: CVE-2025-59952

Advisory: MinIO Java Client XML Tag Value Substitution Vulnerability
IDs: CVE-2025-59952, GHSA-h7rh-xfpj-hpcm
Record: https://patchnext.com/advisories/cve-2025-59952 (revision 1, source checked 26 Oct 2026, 16:40 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: io.minio:minio 8.6.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven io.minio:minio: affected < 8.6.0; fixed in 8.6.0

## Suggested inspection (read-only)
- Maven io.minio:minio: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on io.minio:minio.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-h7rh-xfpj-hpcm (GitHub-reviewed advisory GHSA-h7rh-xfpj-hpcm lists affected ranges: Maven io.minio:minio >=0 <8.6.0)

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