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CVE-2026-87830

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

cve-program · severity unknownCVSS unknownCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-87830

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-87830

Published

org.apache.wss4j:wss4j-ws-security-policy-stax

https://repo.maven.apache.org/maven2

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Apache Software Foundation",
                    "product": "Apache WSS4J",
                    "packageURL": "pkg:maven/org.apache.wss4j/wss4j-ws-security-policy-stax",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "4.0.0",
                            "lessThan": "4.0.2",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "3.0.0",
                            "lessThan": "3.0.6",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "2.4.4",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected",
                    "collectionURL": "https://repo.maven.apache.org/maven2",
                    "packageName": "org.apache.wss4j:wss4j-ws-security-policy-stax"
                }

Original source record · Cite this exact observation · Complete original publisher JSON