Status: UPDATED | Advisory ID: CVE-2026-34487
| CVE | CVE-2026-34487 |
| CVSS Score / Version | 7.5 (High) / CVSS v3.1 |
| Updated | 2026-09-24 |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| CVSS Prose | attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is none; availability impact is none. |
| Affected products | Apache Tomcat |
| Classified as | CWE-532 (Insertion of Sensitive Information into Log File) |
| Exploitation prediction (EPSS) | 0.62% probability of exploitation in the next 30 days (48% percentile) -- FIRST.org's EPSS model. |
| Vendor | Product | Affected Versions | Patch Status |
|---|---|---|---|
| Apache | Tomcat |
| Subsystems | General OT |
| Sectors | Multiple |
Insertion of Sensitive Information into Log File vulnerability in the cloud membership for clustering component of Apache Tomcat exposed the Kubernetes bearer token.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.20, from 10.1.0-M1 through 10.1.53, from 9.0.13 through 9.0.116.
Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.
Monitor Apache's web page for any future patch releases. See vendor advisory link below.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-34487 |
| CVE | https://www.cve.org/CVERecord?id=CVE-2026-34487 |
| Vendor advisory | https://lists.apache.org/thread/4xpkwolpkrj8v5xzp5nyovtlqp3y850h |