Is CVE-2026-34487 actively exploited?

No active exploitation of CVE-2026-34487 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34487 be exploited remotely?

Yes. CVE-2026-34487 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34487?

CVE-2026-34487 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2026-34487

CWE-532Published: April 9, 2026· Updated: Apr 14, 2026

7.5

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:4.9th

Official 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.

NVD Source

Technical Analysis

CVE-2026-34487 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.