# RLSA-2026:18537: tomcat security update

RLSA-2026:18537, released May 29, 2026, fixes 3 CVEs in tomcat (version 1:10.1.49-1.el10_2.1). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rlsa-2026-18537
- Platform: Linux
- Released: May 29, 2026
- Priority: High (Closes CVE-2025-55754, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://errata.rockylinux.org/RLSA-2026:18537

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [tomcat](https://patchblox.com/security/data/product/linux/tomcat.md) | rocky 10 | 1:10.1.49-1.el10_2.1 |

## 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 |  |

---

Data as of 2026-11-07T18:46:35Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.