# ELSA-2026-18536: Security update for 8 packages

ELSA-2026-18536, released July 21, 2026, fixes 3 CVEs across 8 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/elsa-2026-18536
- Platform: Linux
- Released: Jul 21, 2026
- Priority: High (Closes CVE-2025-55754, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2026-18536.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [tomcat9](https://patchblox.com/security/data/product/linux/tomcat9.md) | ol 10 | 1:9.0.117-2.el10_2 |
| [tomcat9-admin-webapps](https://patchblox.com/security/data/product/linux/tomcat9-admin-webapps.md) | ol 10 | 1:9.0.117-2.el10_2 |
| [tomcat9-docs-webapp](https://patchblox.com/security/data/product/linux/tomcat9-docs-webapp.md) | ol 10 | 1:9.0.117-2.el10_2 |
| [tomcat9-el-3.0-api](https://patchblox.com/security/data/product/linux/tomcat9-el-3.0-api.md) | ol 10 | 1:9.0.117-2.el10_2 |
| [tomcat9-jsp-2.3-api](https://patchblox.com/security/data/product/linux/tomcat9-jsp-2.3-api.md) | ol 10 | 1:9.0.117-2.el10_2 |
| [tomcat9-lib](https://patchblox.com/security/data/product/linux/tomcat9-lib.md) | ol 10 | 1:9.0.117-2.el10_2 |
| [tomcat9-servlet-4.0-api](https://patchblox.com/security/data/product/linux/tomcat9-servlet-4.0-api.md) | ol 10 | 1:9.0.117-2.el10_2 |
| [tomcat9-webapps](https://patchblox.com/security/data/product/linux/tomcat9-webapps.md) | ol 10 | 1:9.0.117-2.el10_2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-55754](https://patchblox.com/security/data/cve/CVE-2025-55754.md) | High | jws6-tomcat: Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache Tomcat. Tomcat did not escape A... | 9.6 | 0.1034 |  |
| [CVE-2025-46701](https://patchblox.com/security/data/cve/CVE-2025-46701.md) | High | libtomcat10-embed-java: Improper Handling of Case Sensitivity vulnerability in Apache Tomcat's GCIservlet allows security constraint bypass o... | 7.3 | 0.0314 |  |
| [CVE-2025-55668](https://patchblox.com/security/data/cve/CVE-2025-55668.md) | Routine | jws6-tomcat: Session Fixation vulnerability in Apache Tomcat via rewrite valve. This issue affects Apache Tomcat: from 11.0.0-M1 t... | 6.5 | 0.0095 |  |

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Data as of 2026-11-07T12:40:37Z 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