CVE-2026-34487 — HIGH (7.5)

Q: How severe is CVE-2026-34487?

CVE-2026-34487 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-34487?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Tomcat.

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Apache	Tomcat	>= 9.0.13, < 9.0.117

Related Weaknesses (CWE)

CWE-532

References

https://lists.apache.org/thread/4xpkwolpkrj8v5xzp5nyovtlqp3y850hMailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/04/09/28Mailing ListThird Party Advisory

FAQ

What is CVE-2026-34487?

CVE-2026-34487 is a vulnerability with a CVSS score of 7.5 (HIGH). 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:...

How severe is CVE-2026-34487?

CVE-2026-34487 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-34487?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Tomcat.