# CVE-2026-43515: Apache Tomcat: Security constraints not correctly applied

> CVE-2026-43515: Apache Tomcat: Security constraints not correctly applied. CVSS 9.1 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-43515
Last updated: 2026-06-17T10:49:51Z

- Published: 2026-05-12 15:33 UTC · Updated: 2026-06-17 10:49 UTC · Assigner: apache
- CVSS: 9.1 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS: 1.2%, 69th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-285

## Description

Improper Authorization vulnerability when multiple method constraints define an HTTP method for the same extension in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.

## Affected vendors and products

- Apache Software Foundation: Apache Tomcat

## Tracked companies

- [Confluence](https://rewindex.com/company/confluence.md)
- [Jira](https://rewindex.com/company/jira.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-43515)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-43515)
- [https://lists.apache.org/thread/746nxfxod0wsocxtmv8pb8nkgmwpc6bb](https://lists.apache.org/thread/746nxfxod0wsocxtmv8pb8nkgmwpc6bb)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-43515 · Markdown: https://rewindex.com/cve/CVE-2026-43515.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-43515 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:14:47.597Z