CVE-2026-87830Apache WSS4J: Streaming WS-SecurityPolicy validation may skip element-protection checks.
Updated under an hour ago ()
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It affects Apache Software Foundation Apache WSS4J and 1 other product. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.21%, higher than 11% of scored CVEs.
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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.
- CVSS
- 9.1 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-917
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.21% (percentile 11)
- Assigned by
- apache
- NVD analysis
- Analyzed
- Record last updated
- Sep 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Apache Software Foundation Apache WSS4J apache_software_foundation:apache_wss4j (from the name) | from 4.0.0 before 4.0.2; from 3.0.0 before 3.0.6; before 2.4.4 | CNA record |
apache wss4j apache:wss4j | before 2.4.4; from 3.0.0 before 3.0.6; from 4.0.0 before 4.0.2 | NVD |
References
- https://lists.apache.org/thread.html/lwlozb1x20d16f9dnyvoygc9rrhzq2vnvendor-advisory
- http://www.openwall.com/lists/oss-security/2026/09/30/9mailing-list, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.