CVE-2026-87830
CRITICAL
CVSS 9.1
Published: 2026-09-30
Modified: 2026-09-30
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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.
Quick Facts
| CVE ID | CVE-2026-87830 |
| CVSS Score | 9.1 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| Published | 2026-09-30 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |