CVE-2026-34487

Apache Tomcat: Cloud membership for clustering component exposed the Kubernetes bearer token

Description

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.

Scores

Weaknesses (CWE)

• CWE-532

Advisories

• GHSA-x4m4-345f-5h5g — Apache Tomcat vulnerable to Insertion of Sensitive Information into Log File

European references

• ENISA EUVD · EUVD-2026-21057
• GCVE · GCVE-0-2026-34487

CERT-FR advisories

• CERTFR-2026-AVI-0958 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
• CERTFR-2026-AVI-0933 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
• CERTFR-2026-AVI-0773 — Multiples vulnérabilités dans les produits Atlassian · cert.ssi.gouv.fr
• CERTFR-2026-AVI-0621 — Multiples vulnérabilités dans les produits Atlassian · cert.ssi.gouv.fr
• CERTFR-2026-AVI-0500 — Multiples vulnérabilités dans VMware Tanzu · cert.ssi.gouv.fr
• CERTFR-2026-AVI-0418 — Multiples vulnérabilités dans Apache Tomcat · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

• cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 9.0.13 < 9.0.117
• cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 10.1.0 < 10.1.54
• cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 11.0.0 < 11.0.21

Affected products

References

• https://lists.apache.org/thread/4xpkwolpkrj8v5xzp5nyovtlqp3y850h
• http://www.openwall.com/lists/oss-security/2026/04/09/28

Sources