Apache WSS4J: Streaming WS-SecurityPolicy validation may skip element-protection checks.

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-87830
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-30 12:17:14 UTC
Updated2026-09-30 20:17:35 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 9.1 CRITICAL from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Problem Types: CWE-917 | CWE-917 CWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apache Software Foundation Apache WSS4J affected 4.0.0 4.0.2 semver Not specified
CNA Apache Software Foundation Apache WSS4J affected 3.0.0 3.0.6 semver Not specified
CNA Apache Software Foundation Apache WSS4J affected 2.4.4 semver Not specified

References

ReferenceSourceLinkTags
www.openwall.com/lists/oss-security/2026/09/30/9 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
lists.apache.org/thread.html/lwlozb1x20d16f9dnyvoygc9rrhzq2vn [email protected] lists.apache.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Reported by n0mi1k (en)

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