Description
In the StAX streaming WS-SecurityPolicy validator, certain relative or unsupported XPath expressions can be converted into paths that never match the actual XML element path. A remote SOAP peer may therefore send a required element without the expected signature or encryption.
Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.
Published: 2026-09-30
Score: 9.1 Critical
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Tue, 06 Oct 2026 17:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:apache:wss4j:*:*:*:*:*:*:*:*

Wed, 30 Sep 2026 23:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-264
CWE-643

Wed, 30 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-917
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 30 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache wss4j
Vendors & Products Apache
Apache wss4j

Wed, 30 Sep 2026 13:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-264
CWE-643

Wed, 30 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
References

Wed, 30 Sep 2026 12:00:00 +0000

Type Values Removed Values Added
Description In the StAX streaming WS-SecurityPolicy validator, certain relative or unsupported XPath expressions can be converted into paths that never match the actual XML element path. A remote SOAP peer may therefore send a required element without the expected signature or encryption. Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.
Title Apache WSS4J: Streaming WS-SecurityPolicy validation may skip element-protection checks.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-09-30T19:47:41.782Z

Reserved: 2026-09-09T11:00:14.995Z

Link: CVE-2026-87830

cve-icon Vulnrichment

Updated: 2026-09-30T12:12:21.163Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-30T12:17:14.087

Modified: 2026-10-06T17:26:47.927

Link: CVE-2026-87830

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T00:30:06Z

Weaknesses
  • CWE-917

    Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')