# CVE-2026-91863: eap8-jackson-modules-base: A specially crafted WS-Policy document with deeply nested policy elements can bypass Neethi's nesting-depth limit and...

CVE-2026-91863 is fixed in 13 products on 1 platform, first by RHSA-2026:99018, released November 12, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-91863
- Priority: High
- CVSS: 7.5 (important)
- EPSS: 0.0045
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 21, 2026

## Description

A specially crafted WS-Policy document with deeply nested policy elements can bypass Neethi's nesting-depth limit and exhaust the thread stack, crashing the parser (denial of service). Users are recommended to upgrade to version 3.2.4, which fixes this issue.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | eap8-apache-sshd RHEL 10 | 2.20.0-1.redhat_00002.1.el10eap | [RHSA-2026:99018](https://patchblox.com/security/data/fix/linux/rhsa-2026-99018.md) | Nov 12, 2026 |
| Linux | eap8-bouncycastle RHEL 10 | 1.86.0-1.redhat_00001.1.el10eap | [RHSA-2026:99018](https://patchblox.com/security/data/fix/linux/rhsa-2026-99018.md) | Nov 12, 2026 |
| Linux | eap8-eap-product-conf-parent RHEL 10 | 801.9.1-1.GA_redhat_00002.1.el10eap | [RHSA-2026:99018](https://patchblox.com/security/data/fix/linux/rhsa-2026-99018.md) | Nov 12, 2026 |
| Linux | eap8-ironjacamar RHEL 10 | 3.1.1-1.Final_redhat_00001.1.el10eap | [RHSA-2026:99018](https://patchblox.com/security/data/fix/linux/rhsa-2026-99018.md) | Nov 12, 2026 |
| Linux | eap8-jackson-jaxrs-providers RHEL 10 | 2.18.11-1.redhat_00001.1.el10eap | [RHSA-2026:99018](https://patchblox.com/security/data/fix/linux/rhsa-2026-99018.md) | Nov 12, 2026 |
| Linux | eap8-jackson-modules-base RHEL 10 | 2.18.11-1.redhat_00001.1.el10eap | [RHSA-2026:99018](https://patchblox.com/security/data/fix/linux/rhsa-2026-99018.md) | Nov 12, 2026 |
| Linux | eap8-jackson-modules-java8 RHEL 10 | 2.18.11-1.redhat_00001.1.el10eap | [RHSA-2026:99018](https://patchblox.com/security/data/fix/linux/rhsa-2026-99018.md) | Nov 12, 2026 |
| Linux | eap8-mod_cluster RHEL 10 | 2.1.1-1.Final_redhat_00001.1.el10eap | [RHSA-2026:99018](https://patchblox.com/security/data/fix/linux/rhsa-2026-99018.md) | Nov 12, 2026 |
| Linux | eap8-neethi RHEL 10 | 3.2.4-1.redhat_00001.1.el10eap | [RHSA-2026:99018](https://patchblox.com/security/data/fix/linux/rhsa-2026-99018.md) | Nov 12, 2026 |
| Linux | eap8-wildfly RHEL 10 | 8.1.9.1-1.GA_redhat_00006.1.el10eap | [RHSA-2026:99018](https://patchblox.com/security/data/fix/linux/rhsa-2026-99018.md) | Nov 12, 2026 |
| Linux | eap8-wildfly-http-client RHEL 10 | 2.1.5-1.Final_redhat_00001.1.el10eap | [RHSA-2026:99018](https://patchblox.com/security/data/fix/linux/rhsa-2026-99018.md) | Nov 12, 2026 |
| Linux | eap8-wildfly-javadocs RHEL 10 | 8.1.1-15.GA_redhat_00052.1.el10eap | [RHSA-2026:99018](https://patchblox.com/security/data/fix/linux/rhsa-2026-99018.md) | Nov 12, 2026 |
| Linux | eap8-ws-commons-XmlSchema RHEL 10 | 2.3.3-1.redhat_00001.1.el10eap | [RHSA-2026:99018](https://patchblox.com/security/data/fix/linux/rhsa-2026-99018.md) | Nov 12, 2026 |

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Data as of 2026-11-12T13:55:20Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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